Predict what will happen to the following lung volumes and capacities during strenuous exercise. Assume that you are comparing from a baseline of normal resting respiration.


Lung Volume or Capacity Predicted change from resting baseline : Use Increase, Decrease or No Change

TLC (total lung capacity)
No change
VC (Vital capacity)
IC (Inspiratory capacity)
FRC (Functional residual capacity
TV (Tidal volume)
IRV (Inspiratory reserve volume)
ERV (Expiratory reserve volume)
RV (Residual volume)

Answers

Answer 1

Answer:

During intense exercise:

lung capacity increases

vital capacity increases

respiratory capacity increases

functional residual capacity increases

tidal volume increases

the inspiratory and expiratory reserve volumes decrease as does the residual volume.

Explanation:

Residual volumes decrease because having better lung capacity, better development of the secondary skeletal muscles that collaborate in expiration and inspiration, these are given in a better way, and more effectively.

If these processes take place more efficiently, their potentiality increases and expiration and inspiration move a large current of air into the lungs, thus leaving less reserve airs.

Those people who have increased exhalation or inspiration reserve, have a weak activity of the musculature in the processes and function as "stagnant air" which is synonymous with a lack of physical activity or aerobic capacity.

It is important to clarify that all the above processes are accompanied by an increase in the size of the chest cage


Related Questions

if the sequence of bases on the mrna codon is auu what would be the sequence of bases on the trna anticodon
att
uaa
taa
uua

Answers

Answer:

uaa

Explanation:

An anticodon is a trinucleotide sequence localized in the transport RNA (tRNA) that binds via complementary base pairing to the codon in the messenger RNA (mRNA) during protein synthesis (translation). Thus, the tRNA anticodon binds with its complementary three-letter mRNA codon during translation in order to add a specific amino acid to the growing protein. Generally, the anticodon sequence positions 34–36-nt of the tRNA that reads its cognate mRNA codon sequence via Watson–Crick base pairing.

HEEELLLPPP PLSS!!! Compare and contrast open, closed, and isolated systems. Be sure to discuss the exchange of energy and exchange of matter, and provide at least one example of each.

Answers

Answer:

See the answer below

Explanation:

An open system is a type of thermodynamic system in which energy and matter are being exchanged between the system and the surrounding. It is like boiling soup in an open pot. The opening allows for the addition of materials (matters) into the soup and energy is exchanged through the heating. A good example is found in biological organisms. They consume matters and exchange energy with the environment by carrying out work.

A closed system is a type of system in which there is no exchange of matter between it and the environment. However, there is an exchange of energy. It is like boiling water in a closed pot. Nothing can be added into the pot due to the closure but energy can be transferred through the heating of the pot.

An isolated system allows for neither energy nor matter exchange with the surrounding. It is like a closed food warmer that allows for nothing to enter or leaves it.

Answer: Open systems are energy that can be transferred between the system and its surroundings. Close systems are systems that do not transferred to its surroundings. Isolated systems is a thermodynamic system which cannot exchange either energy or matter from outside its boundaries of the system.

Hope this helps:)

QUICKLY! The chemical reaction equation of photosyntesis is shown here: What information is not given in this equation. It does not show if the reaction is reversible. It does not show the reactants needed for the reaction. It does not show that photosynthesis consists of many separate steps. It does not show the number of molecules required to produce glucose.

Answers

Answer:

C: It does not show that photosynthesis consists of many separate steps.

Explanation:

Photosynthesis is a unique process carried out by the cells of autotrophic organisms. It is the process whereby they synthesize their own food in form of sugars (glucose) in the presence of sunlight. Ideally, the photosynthetic process makes use of carbon dioxide (C02) and water (H20) in the presence of light energy (from sun) to produce glucose sugar (C6H12O6) and oxygen (02). The general photosynthetic equation is as follows:

6CO2 + 6H20 + light → C6H12O6 + 6O2

However, the process is not as simple as portrayed as it involves many separate steps that collectively forms the photosynthetic product (glucose). Photosynthesis occurs in two major stages namely: light stage and light independent stage, which in turn consists of series of reactions that forms the products.

Therefore, the equation attached to this question describes photosynthesis but It does not show that photosynthesis consists of many separate steps.

Answer:

C: It does not show that photosynthesis consists of many separate steps.

Explanation:

Saprobic microorganisms are important decomposers of plant litter, animal matter, and dead microbes. This is an example of a(n) ______________.

Answers

Answer:

The correct answer would be - heterotrophs (chemoheterotrophs)

Explanation:

Heterotrophs are the living organisms that are directly or indirectly depend on the autotrophs or the organisms that can make their own food for energy and growth.

Saprobic microorganism are free living organisms that get their energy from decomposing rotten or dead organic matter such as plant litter, animal matter and dead microbes. It is performed with the help of enzymes or chemicals they release to decompose such matter. they also known as chemoheterotrophs.

Thus, the correct answer would be - heterotrophs (chemoheterotrophs).

Hibernation enables an animal to save

Answers

Answer:

energy

Explanation:

Select the scenarios that describe an abiotic factor that is density independent. Select the TWO answers that are correct.

a. Fir trees grow in number, increasing the amount of food available for moose
b. Heavy and continuous rains flood the land, submerging habitats.
c. Lightning strikes a tree and begins a fire that clears the land.
d. Ticks infesting moose weaken the moose's health and reproductive success.
e. Frigid temperatures flow into the area, causing hypothermia and death.

Answers

Answer: Option B and C.

Heavy and continuous rains flood the land, submerging habitats.

c. Lightning strikes a tree and begins a fire that clears the land.

Explanation:

Heavy and continuous rains flood the land, submerging habitats.

Lightning strikes a tree and begins a fire that clears the land.

The above are example of density independent abiotic factors because rainfall and lightning affect the population size of the environment by decreasing it's population sizes.

Abiotic factors are the non living part of the environment and they include rain fail, temperature,lightning, humidity e.t.c.

Density independent abiotic factors are factors that decrease or increase the population size of the ecosystem.

Therefore, Heavy and continuous rains flood the land, submerging habitats.

cLightning strikes a tree and begins a fire that clears the land are density independent factor because they decrease the population size.

The scenarios that describe an abiotic factor that is density independent are ; ( B and C )

Heavy and continuous  rains flood the land, submerging habitats ( B )Lightning strikes a tree and begins a fire that clears the land ( C )

Abiotic factors are Nonliving components of an ecosystem that has a significant effect on the ecosystem such as ; Rain, rocks, Temperature and humidity. Density Independent factors are factors in an ecosystem that can cause the decrease or increase of the population size of an ecosystem.

Heavy and continuous rainfall is an abiotic factor that has the ability to decrease the population of an ecosystem by submerging organisms habitats.

Lightning striking a tree and setting it ablaze which clears the land also reduces the population of the ecosystem because the fire will lead to loss of habitats and death of some organisms .

Hence we can conclude that The scenarios that describe an abiotic factor that is density independent are Heavy and continuous  rains flood the land, submerging habitats and Lightning strikes a tree and begins a fire that clears the land .

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The diagram represents a food pyramid. The concentration of the pesticide DDT in individual
organisms at level D is higher than the concentration in individuals at level A because DDT is
A. produced by organisms at level C ingested by
those in level D.
B. passed through levels A, B, and C to organisms
at level D.
C. excreted by organisms at level A as a toxic
waste.
D. synthesized by organisms at level D.

Answers

Answer:

B. passed through levels A, B, and C to organisms

Explanation:

DDT is an insecticide that passed through the food chain from one trophic level to the next.

The concentration of DDT increases with the each trophic level in food chain and the amount of toxin increases as passes from A to B, B to C, and C to D where D has the higher concentration of DDT as it is the higher trophic level than A, B, and C.

Hence, the correct answer is "B. passed through levels A, B, and C to organisms".

What are some functions of a cell membrane? Select all that apply.

The cell membrane shields the cell’s internal parts.

The cell membrane prevents the environment inside the cell from changing.

The cell membrane contains the cell’s DNA and RNA.

The cell membrane allows needed materials to enter

Answers

Answer:Only the 3rd statement is WRONG.

DNA and RNA are present in the nucleus of the cell

Explanation:THE CORRECT STATEMENTS ARE :

The cell membrane shields the cell’s internal parts.

The cell membrane prevents the environment inside the cell from changing.

The cell membrane allows needed materials to enter

The correct statements about the functions of a cell membrane are:

A. The cell membrane shields the cell’s internal parts.

B. The cell membrane prevents the environment inside the cell from changing.

D. The cell membrane allows needed materials to enter.

A cell is defined as the basic functional, structural and smallest unit of life in all living organisms.

Cell organelles refers to the inner organs (workers) that are responsible for performing various tasks or functions, especially for the survival of a living organism.

Basically, some cell organelles found in living organisms includes:

Nucleus. Cytoplasm.Golgi apparatus. Mitochondria.Cell membrane.

A cell membrane can be defined as the wall of a cell which typically controls what enters and leaves the cell.

Hence, some of the functions of a cell membrane are:

The cell membrane allows materials needed by a living organism to enter the cell.The cell membrane serves as a shield (wall) for the cell’s internal parts.The cell membrane preserves the environment inside the cell by preventing it from changing.

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Match each part of Sammi's model to the bodily structure it represents. One bodily structure has already been labeled for you.

Answers

Answer:

corrugated cardboard tube - digestive tract

irregular surfaces on the corrugated tube - villi

pump - heart

Plastic tubing - blood vessels

Explanation:

The corrugated cardboard tube represents the digestive tract.  The give away was the presence of the irregular surfaces within the tubes. This is called the villi. The villi is responsible for the absorption of food after digestion into the body.

Irregular surfaces on the corrugated tube represent the villi. They are tiny hair-like structures that are in the small intestine, that are responsible for the absorption of food into the bloodstream.

The pump represents the heart. The heart is the only organ in the body that provides the pressure force that pushes the blood throughout the body. In this model, the pump will most likely be performing the same function.

The plastic tubings are meant to contain one form of fluid or the other. Judging from that, they can be said to represent the blood vessels. This is because they are connected to the heart and are meant to transport bodily fluids around the body

Answer:

corrugated cardboard tube - digestive tractirregular surfaces on the corrugated tube - villipump - heartPlastic tubing - blood vessels

Explanation:

When a bacterium such as E. coli is shifted from a warmer growth temperature to a cooler growth temperature, it compensates by

Answers

Question is incomplete, The complete question is as follows:

When a bacterium such as E. coli is shifted from a warmer growth temperature to a cooler growth temperature, it compensates by:

A) increasing its metabolic rate to generate more heat.

B) putting longer-chain fatty acids into its membranes.

C) putting more unsaturated fatty acids into its membranes.

D) shifting from aerobic to anaerobic metabolism.

E) synthesizing thicker membranes to insulate the cell.

Answer:

C) putting more unsaturated fatty acids into its membranes.

Explanation:

Bacteria has the ability to change the composition of fatty acid present in its cell membrane to compensate the change in temperature.

When bacterium E.Coli will shift from hight or warmer temperature to low or cooler temperature, it will put more unsaturated fatty acids into its membranes which will mintain the fluidity in the membrane.

Hence, the correct option is "C".

What is the relationship between DNA mutation and sickle-cell anemia? (1 point)
O Sickle-cell anemia and DNA mutations are correlated without any causal relationship.
O Sickle-cell anemia causes a DNA mutation.
O A DNA mutation causes sickle-cell anemia.
O A DNA mutation is correlated with but does not cause sickle-cell anemia.

Answers

Answer:

A DNA mutation causes sickle-cell anemia.

Explanation:

Sickle cell anemia is caused by a single code letter change in the DNA. This in turn alters one of the amino acids in the hemoglobin protein. Valine sits in the position where glutamic acid should be. The valine makes the hemoglobin molecules stick together, forming long fibers that distort the shape of the red blood cells, and this brings on an attack.

atch the term with the correct cellular process or definition. - A molecule containing genetic information - RNA base that pairs with adenine - Carries amino acid to ribosomes - The site of protein synthesis - DNA base that pairs with adenine - Carries the genetic code to ribosomes A. mRNA B. DNA C. tRNA D. Thymine E. Uracil F. rRNA G. Ribosome

Answers

Answer:

A molecule containing genetic information - DNA

RNA base that pairs with adenine - Uracil

Carries amino acid to ribosomes - tRNA

The site of protein synthesis - Ribosome

DNA base that pairs with adenine - Thymine

Carries the genetic code to ribosomes - mRNA

Explanation:

DNA is the molecule that is responsible for conveying genetic information in living organisms. It is made up of deoxyribose sugar, a phosphate group, and purine/pyrimidine bases. The purine bases consist of adenine and guanine while the pyrimidine bases include thymine and cytosine. As a matter of rule in the DNA, Adenine base always pairs with Thymine base while the Cytosine base always pairs with Guanine base.

RNA on the other hand is single-stranded unlike the double strands of DNA. It has all the nucleotide bases present in DNA except that the Thymine bases are usually replaced with Uracil.

There are three types of RNA:

the messenger RNA that is responsible for carrying genetic code from DNA to the ribosome for translation purpose, the transfer RNA responsible for carrying amino acids to ribosome during the translation process; and the ribosomal RNA which forms an integral part of the subunits of the ribosome itself.

Categorize each enzyme based on its specific function in glycolysis, gluconeogenesis, or both pathways.a. Triose phosphate isomerase b. Glucose 6-phosphatase c. Hexokinase d. Fructose I ,6-bisphosphatase e. Phosphofructokinase f. Pyruvate kinase

Answers

Answer:

a. Triose phosphate isomerase glycolysis

b. Glucose 6-phosphatase gluconeogenesis

c. Hexokinase  glycolysis & gluconeogenesis

d. Fructose I ,6-bisphosphatase gluconeogenesis

e. Phosphofructokinase glycolysis

f. Pyruvate kinase glycolysis

Explanation:

Triose phosphate isomerase is a protein that functions as an enzyme, and takes part in glycolysis, in the interconversion of dihydroxyacetone phosphate and D-glyceraldehyde 3-phosphate. Glucose 6-phosphatase is also a protein that works as an enzyme, it hydrolyzes glucose 6-phosphate given glucose free as a result. Hexokinase is a protein too, and is part of a wider group of enzymes. It forms hexose phosphate by phosphorylating hexoses (six-carbon sugars). Fructose I ,6-bisphosphatase is an enzyme too, and it tranforms fructose-1,6-bisphosphate into fructose 6-phosphate. Phosphofructokinase is an enzyme too, that works in changing a phosphoryl group from ATP to fructose-6-phosphate (F6P). Pyruvate kinase is an enzyme that catalyzes the conversion of ADP tp ATP and phosphoenolpyruvate to pyruvate.

The giant continent which was composed of all the land on Earth was called
a. Pangaea.
c. Gondwana.
b. Panthalassa.
d. Laurasia.

Answers

The answer is "Pangaea"

Answer:

Pangea

Explanation:

Answer

A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern?

Answers

A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern?

B. Xylem

as it contribute for most of a tree's growth in diameter.

When chyme enters the duodenum, ____ is released and stimulates the pancreas to secrete bicarbonates. A. gastrin B. secretin C. insulin D. cholecystokinin E. glucagon

Answers

Answer: B. secretin

Secretin is secreted in response to acid in the duodenum, which occurs when acid-laden chyme from the stomach flows through the pylorus. The effect of secretin on the pancreas is to stimulate duct cells to secrete water and bicarbonate.

Which of the following is true about the speed of light?
O it is a constant when the light is traveling in a vacuum.
O It speeds up or slows down depending on the observer.
O It is slowest in a vacuum.
O lt varies depending on the color of the light.

Answers

Answer:

It is a constant when the light is traveling in a vacuum.

Explanation:

What is it called when a bacterium uses a virus to transfer its DNA to another bacterium?
O A Transduction
х
B. Conjugation
O C. Transformation
O D. Transcription
X Incorrect
It isn’t A

Answers

it is transduction.

though it happens in prokaryotes

Answer:

Transduction.

Explanation:

A P E X

What growth information leads to your answer? The colonies are able to grow on minimal medium containing no additional supplements. The colonies are able to grow on complete medium.

Answers

Answer:

A growth medium or culture medium is a solid, liquid or semi-solid designed to support the growth of a population of microorganisms or cells via the process of cell proliferation,[1] or small plants like the moss Physcomitrella patens.[2] Different types of media are used for growing different types of cells.[3]

The two major types of growth media are those used for cell culture, which use specific cell types derived from plants or animals, and microbiological culture, which are used for growing microorganisms, such as bacteria or fungi. The most common growth media for microorganisms are nutrient broths and agar plates; specialized media are sometimes required for microorganism and cell culture growth.[1] Some organisms, termed fastidious organisms, require specialized environments due to complex nutritional requirements. Viruses, for example, are obligate intracellular parasites and require a growth medium containing living cells.

Describe Dr. Vellend's unifying theory of ecological communities (the factors that determine community structure). Where do concepts like competition, predation, habitat suitability, disease and parasitism, and disturbance (most of what we covered this semester) fit into his theory

Answers

Answer and Explanation:

Community ecology is a discipline that studies the organism's communities and the manner in which populations of species interact with each other within a particular habitat. Mark Vellend is an eco-evolutionist that developed a theoretical framework of ecological communities from a unified functional perspective. This theory is based on four forces of evolutionary biology: selection, drift, dispersal and speciation. This theory is used to explain how species interactions including parasitism, competition and predation may influence population fluctuations. On the other hand, this theoretical framework can also be used to understand how colonization, disturbance and habitat suitability components alter the dynamics of interacting species.

How are organisms in the domain archaea different from those in the domain eukarya? A. Archaea have DNA B. Archaea have more than one cell C. Archaea have no nucleus D. Archaea can reproduce sexually

Answers

Answer:

C. The Archaea have no nucleus.

Explanation:

Archaea have no organelles while Eukaryas do, in other words Archaea have DNA that is not in a nucleus.

The organisms in the domain archaea different from those in the domain eukarya is Archaea have no nucleus.

What are the characteristics of Archaea?

Archaea is a space of single-celled living beings. Prokaryotes are these microorganisms because they do not have cell nuclei. Initially referred to as archaebacteria, archaea were categorized as bacteria.

By interacting with both bacteria and their hosts, Archaea contribute to the ecosystem's and vegetation's functioning in the harsh bog ecosystem by carrying out functions related to nutrient cycling, stress response, and phytohormone biosynthesis.

The following characteristics of Archaebacteria have been identified as common: the presence of ribosomal and tRNA characteristics; 2) the absence of peptidoglycan cell walls, which are frequently replaced by a coat that is mostly proteinaceous.

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The original name for Asian Homo erectus was Group of answer choices Homo rudolfensis. Australopithecus. Paranthropus. Pithecanthropus.

Answers

Answer: Pithecanthropus erectus.

Explanation:

Between 1891 and 1892 Eugène Dubois believed he had found the "missing link", hypothesized by Ernst Haeckel, when he discovered some loose teeth, a skull cap and a femur - very similar to that of modern man - in the excavations he was carrying out in Trinil, located on the island of Java, Indonesia. Homo erectus erectus was the first specimen of Homo erectus to be discovered.  Dubois first named it Anthropopithecus erectus and then renamed it Pithecanthropus erectus. The name Homo erectus means in Latin "erect man", wich means, "standing man", whereas Pithecantropus erectus means "standing ape-man".

So, Dubois published these findings as Pithecanthropus erectus in 1894, more popularly known as "Java Man" or "Trinil Man". In the 1930s the German palaeontologist Ralpf von Koenigswald obtained new fossils, both from Trinil and from new locations such as Sangiran and in 1938 von Koenigswald identified a magnificent Sangiran skull as "Pithecanthropus". It was not until 1940 that Mayr attributed all these remains to the genus Homo (Homo erectus erectus).

three (3) advantages of using a resource person in handling the First Aid lesson.

Answers

Answer:

Advantages of resource person in handling the first aid lesson are as follows:

He is an expert who share important points during first aid and prevents any mishappening.They also provide assistance to the community member and provide social audits in villages.A resource person can share extreme difficult cases of injuries and will introduce new methods to adopt first aid in those conditions.

Which medical conditions are associated with large amounts of fat and sugar in your diet? Select three options.

Answers

Answer:

gall bladder disease

hypertension

osteoarthritis

Answer:

diabetes

heart disease

obesity

Explanation:

What part of the brain is known as the pleasure center?

A. Brain stem

B. Hypothalamus

C. Thalamus

D. Midbrain

SUBMIT

Answers

Answer:

B. Hypothalamus

Explanation:

The hypothalamus contains the pleasure center of the brain, the nucleus accumbens. The hormone dopamine is released from this part of the brain in response to or anticipation of pleasurable activities such as eating good food, monetary rewards as well as when taking psychoactive drugs.

The release of dopamine affects other feelings such as happiness, focus, being alert as well as staying motivated. it also affect some voluntary actions as well.

Constantly seeking out activities that stimulate dopamine release may lead to addiction to such activities as in drug addiction.

The field of inquiry that studies human culture and evolutionary aspects of human biology; includes cultural anthropology, archeaology, linguistics, and physical, or biological anthropology. __________

Answers

Answer:

physical, or biological anthropology.

Explanation:

When there is a need to study human kind   through the X-ray of  relationships between human biology, its cultural diversity, and  evolution ,the aspect anthropology for this is Biological anthropology.

Therefore biological anthropology is concerned about how the interaction between the cultural diversity and biological process results in the  adaptations of mankind to different  environments.The influence of these on growth, behaviours, existence.

The primary focus of biological anthropologists is to study in details the concept of  ,mechanism of  variation,  adaptation.and how these lead to evolution and origin of mankind.

Sequel to this ,most evidences for this concept are obtained from the study of fossil materials,study of other related primates to man, and components of functional biology and genetics.

Which two Neolithic activities came about because of climate change?

Answers

Answer:

1. Domesticating animals  

2. Farming grains

Explanation:

Poeple started doing these without machines because of climate change.

Two students are comparing scientific experiments to investigations. They came up with the following ideas. Student A: Testing plant growth in different types of soils Student B: Comparing the water level in a lake during different times of the year Which student gave an example of a scientific experiment? Student A because it requires experimental and control groups Student B because it requires a hypothesis Student A because it is preferably done in natural settings Student B because it is preferably done across a long period of time

Answers

Answer:

Student A because it requires experimental and control groups

Explanation:

Answer:

i took the test, its A

Student A because it requires experimental and control groups

Explanation:

In meiosis, each centromere has a spindle fiber attached only to one side. In mitosis, each centromere has a spindle attached to how many sides?

Answers

Answer:

In mitosis, each centromere has a spindle attached on both side of centromere

Explanation:

In mitosis, each centromere has a spindle attached on both side of centromere because Spindle fibers move chromosomes during cell division by attaching to chromosome arms and centromeres. A centromere is the specific region of a chromosome where replicates are linked together.

Spindle fibers are active in mitosis and also meiosis and they move throughout the cells and also direct chromosomes to move to where they need to move to.

Spindle fibers function in centromere in mitosis and meiosis by pulling homologous chromosomes apart after they might have been replicated to prepare for division.

What is the correct formula for population growth? A. D+B-I-E B. E+D-B-I C. B+I-D-E D. I+E-B-D

Answers

Answer:

C.) B+I-D-E

Explanation:

The correct formula for population growth is the individuals added to the population via birth or immigration, minus the individuals removed from the population via death or emmigration. Therefore the answer is (B+I)-(D+E), or B+I-D-E

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Difference between matter and energy Bismah is building 5 raised garden beds in a community garden. Each raised garden bed will need 1 7 8 bags of soil. How many bags of soil will Bismah need for all 5 raised garden beds? How has the games changed over the years? Which best states the central idea of this excerpt? It is always necessary to work with a partner when dealing with unidentified substances. Extreme precautions must be taken when dealing with potentially hazardous materials. Scientists are well known for being overly cautious and for taking unnecessary safety measures. It is standard procedure to wear both space suits and hearing protectors in laboratories. The distance between two points on a number line can be found by taking the blank of the blank of the coordinates. absolute value sum quotient difference product A market research firm supplies manufacturers with estimates of the retail sales of their products from samples of retail stores. Marketing managers are prone to look at the estimate and ignore sampling error. A random sample of 36 stores this year shows mean sales of 83 units of a small appliance with a standard deviation of 5 units. During the same point in time last year, a random sample of 49 stores had mean sales of 78 units with standard deviation 3 units.Required:Construct a 95 percent confidence interval for the difference in population means. How are pH and pOH ?A. pH = 14 + pOH B. pOH = 14 - pH C. pOH = 14 + pH D. pH = 14 - pOH A fruit tray was served at a meeting. During the meeting, 4 out of 10 strawberries were eaten. Which model has a shaded region that represents the amount of strawberries eaten during the meeting? Very few countries in the world _________ as like Bangladesh. now developing is now developing are now developing now developed HELP!!!!!!!!!!!!!!!!!!!!!!!!!!! In 5 hours a small plane can travel downwind for 4000 kilometersor upward 3000 kilometers. Find the speed of this plane with no wind and the speed of the wind current.write as an equation Use the discriminant to determine the number of real solutions to the equation. 8n^27n=7 what is the sum of 1.3 and 5.07 2. Skip and Peggy are brother and sister and they fight about everything. Skip says that perfectly competitive firms maximize profit where marginal revenue equals marginal cost. Peggy says perfectly competitive firms maximize profit where price equals marginal cost. Settle this sibling rivalry once and for all. Liam tried to define a translation. - Point A maps to point A' - Every point P maps to point P' such that PP' is parallel to AA' and points in the same direction as AA' Which counterexample shows that Liam's definition does not fully define a translation? what is the value of -19- (-18)? Select the equivalent expression. (8^-5/2^-2)^-4 = ? Choose 1 answer: A. 1/8*2^2 B. 2^6/8^9 C. 8^20/2^8 Malcolm X: a. felt that the Black Power movement went too far. b. worked with the Southern Christian Leadership Conference. c. insisted that blacks have economic and political autonomy. d. supported integration efforts. e. was inspired by the efforts of Booker T. Washington. x^{2m+n} * x^{n-m} / x^{m+2n} A container contains 200g of water at initial temperature of 30C. An iron nail of mass 200g at temperature of 50C is immersed in the water. What is the final water temperature? State the assumptions you need to make in your calculations.[Given the value of specific heat capacity of water is 4200 J kg^-1 C^-1 and that of iron is450 J kg^-1 C^-1]