Answer:
a
Explanation:
You are the lucky student of a wacky professor who develops a time machine. He asks if you will test it with him. You get in and there is an immediate glitch–the date readout fails so that when you land you are not sure what era you are in. As your time machine lands, you see an unusual landscape before you. As you open the door you realize you cannot breathe. You quickly shut the door, realizing you are in the _____.
1) Archaean eon
2) Cambrian period
3) Cenozoic era
4) Mesozoic era
Answer: Option 1 is the correct answer
Archaean eon
Explanation:
You are in the Archean Eon era because the it was early in the Archean that life first appeared on Earth. The most two earlier of the formal divisions of Precambrian time (about 4.6 billion to 541 million years ago) and the period when life first formed on Earth It began about 4 billion years ago with the formation of Earth’s crust and enlongated to the begining of the Proterozoic Eon 2.5 billion years ago; the latter is the second formal division of Precambrian time.
In the Archean eon there are unsual landscapes no rocks are preserved from this stage. The earliest terrestrial materials are not rocks but minerals.
Throughout the Archean, oceanic and island arc crust was produced semi-half way.
You cannot breathe because there was no oxygen on the Earth. Oxygen was only present in compounds such as water and chemical reactions change to carbon containing molecules that form simple living cells that does not require oxygen.
"A type of laser medium that produces a visible blue-green wavelength beam that is absorbed by red-brown pigmented tissue, such as the red hemoglobin in blood, and by the cells that lie under the retina, is a(n)"
Answer: ARGON LASER
Explanation: An Argon laser is a type of unique laser system that was invented in 1964,it is unique because it uses a noble gas (ARGON) as it's active medium. Argon laser functions by emitting a colored light of blue/green,this light is being absorbed by haemoglobin present in blood cells,the heat produced gives room/allows the laser to close up cells of blood that are ruptured.
Which of the following is an example of a consumer? Tree Sun Rabbit Mushroom
True or False: Within the body, all atoms combine to form molecules. If false, why?
Answer:
True
Explanation:
Two or more atoms combine to form a molecule, like how the water molecules, proteins, and sugars are found in living things.
Hope this helps! （づ￣3￣）づ╭❤～
The statement i.e. ''Within the body, all atoms combine to form molecules'' is true.
Atoms combine together to form molecules because atom is unstable substance which can't stay in single form due to its reactive nature but become stable when they form molecules due to filling of outermost shell and attain the electronic configuration of noble gases so we can say that atoms formed molecules in order to attain stability and can not remain individually.
https://brainly.com/question/17184872
If capeland switches from producing 0 watermelons to producing 18 million tons of watermelons, what does it give up?
Answer:
Attached to this solution is an image of the complete question and data.
The correct answer is:
6 million pairs of shoes
Explanation:
From the diagram attached to this answer, the following data can be gotten:
Watermelons shoes
(Millions of tonnes) (Millions of pairs)
0 15
8 14
14 12
18 9
20 5
21 0
From the pattern of the data shown above, we notice that as the production of one commodity increases, the other is given up (decreases)
Therefore, to find how much shoes are given up if Capeland switches from 0 watermelons to 18 million tons of watermelon, we will find the difference between the number of shoes produced at 0 and at 18 million tons of watermelon
at 0 watermelon; shoes = 15 million pairs
at 18 million tons of watermelon; shoes = 9 million pairs
Therefore, number of shoes given up = 15 - 9 = 6 million pairs
Hence, 6 million pairs of shoes are given up tp increase production of watermelon from 0 to 18 million tons
WILL GIVE BRAINLIEST AND POINTS!!!!!!! How long can we survive on each planet of the solar system without a spacesuit?
Answer:
about 80 days
Explanation:
the time period of survival is roughly a second, even though the gravity force is equal to that of Earth (the more you know!) Without holding our breaths, or donning any kind of spacesuit, we can survive for about 80 years
Which type of energy do you think is better: SOLAR ENERGY or WIND ENERGY?why do you think that ?
Answer: solar energy is better.
Explanation:
what is biology definition in details
Answer:
Biology :[tex]<font color=green>[/tex]
the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behaviour, origin, and distribution.
[tex]<font color=pink>[/tex]
#Be Brainly
Answer:
The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants and fungi.
Hope this helps! :D
A student finds that the mass of 25mL of an unknown liquid is 20.5g. What is the density of this substance?
Answer:
Density, [tex]d=0.82\ g/cm^3[/tex]
Explanation:
It is given that,
Mass of unknown liquid is 20.5 kg
Volume, V = 25 mL
We know that, 1 mL = 1 cm³
25 mL = 25 cm³
The density of the substance is equal to its mass per unit volume. So,
[tex]d=\dfrac{m}{V}\\\\d=\dfrac{20.5\ g}{25\ cm^3}\\\\d=0.82\ g/cm^3[/tex]
So, the density of this substance is [tex]0.82\ g/cm^3[/tex].
Answer:
0.82
Explanation:
just took test
Why did the author think e-skin could make better hearing aids? In your answer, explain how the ears connect to the nervous system
Answer:
The author thought this because e-skin might hold promise for use in soft, wearable hearing aids. Unlike conventional aids, soft devices are more comfortable because they mold to human skin. When the ear receives sound vibrations, there are hair cells in the cochlea that vibrate and translate the sounds into electrical signals. These electrical signals are transmitted to the auditory nerve, which transmits the information to the brain.
Answer:
Sound is one of the five major senses. The nervous system carries sound signals from sensory receptors to the brain. E-skin has many sensory receptors that can carry signals toward the brain, enabling us to react to sounds. Because e-skin is soft, scientists can use it to make effective hearing aids that are quite comfortable to wear.
Explanation:
do not copy it, this is the exact answer from Edmentum
(this means it right)
In which form do plants store energy?
starch
glycogen
chitin
cellulose
Answer:
starch
Explanation:
plant store energy in the form of starch and animal store energy in the form of glycogen these starch and glycogen are converted into glucose whenever body needs energy
Answer:
The answer is Starch
Explanation:
Hopefully this helps you
pls mark brainlest
It is right on Edge2020
brain is considered as the centre of all senses, why ?
Answer:
the brain transfers and receives all signals from different parts of the body and controls what we do. it stimulates all our moves.
if something we touch is hot the brain will receive signals from the sensory cells in the skin, it'll tell us to move away, we'll move our hand away as a reaction.
Explanation:
Please help!
Without the discovery of magnetic reversals recorded on the ocean floor, scientists
A. could not confirm the usefulness of sonar
B. could destroy the hypothesis of continental drift
C. could not provide a mechanism for moving continents
D. could explain how the seafloor was being destroyed
Answer:
C. could not provide a mechanism for moving continents
Explanation:
Without the discovery of magnetic reversals recorded on the ocean floor, scientists could not provide a mechanism for moving continents.
Magnetic reversals are responsible for geological shifts and depend on the distribution of tectonic plates that causes movements of continents.
Asymmetric movement of tectonic plates leads to movement of continents and the degree of asymmetry varies with the same rythm of the magnetic reversal rate.
Hence, discovery of magnetic reversals are important to identify the mechanism for moving continents.
The study of a living being is called biology.
The correct answer is C.
Without the discovery of magnetic reversals recorded on the ocean floor, scientists could not provide a mechanism for moving continents because magnetic reversals are responsible for geological shifts and depend on the distribution of tectonic plates that causes movements of continents.
Asymmetric movement of tectonic plates leads to movement of continents and the degree of asymmetry varies with the same rhythm of the magnetic reversal rate. Therefore the discovery of magnetic reversals is important to identify the mechanism for moving continents.
Hence, the correct answer is C that it could not provide a mechanism for moving continents.
For more information, refer to the link:-
https://brainly.com/question/20293447
The permeability of ______ in the second coiled tubule of the nephron is controlled by _______.
Answer:
distal tubule, the concentration of ADH
Explanation:
Nephron is the functional unit of kidney. Nephron undergo reabsorption and secretion along different part.
The permeability of distal tubule to water in the second coiled tubule of the nephron is controlled by the concentration of ADH. The concentartion of ADH controls the degree of dilution or urine concentration. High ADH level makes , tubules permeable to water while the absence of ADH makes them impermeable to water.
Hence, the correct answers for blanks are distal tubule and the concentration of ADH.
Answer:
The distal tubule, the concentration of ADH.
Question 3 of 10
Which of the following is a function performed by a detrivore?
A. Producing oxygen from sunlight
B. Moving nutrients into the soil
C. Hunting prey
D. Protecting prey from predators
Answer:
B. Moving nutrients into the soil
Explanation:
Detritivorous include millipedes, springtails, woodlice, dung flies, slugs, many terrestrial worms, sea stars, sea cucumbers, fiddler crabs, and some sedentary polychaetes such as worms of the family Terebellidae. All of which as you know help move nutrients to the soil.
Hope this helps, and have a good day! :)
Answer:
B. Moving nutrients into the soil.
Explanation:
A.P.E.X
In 1998, scientists discovered that the expansion of the universe has been accelerating.
What force is causing this phenomena?
dark energy
Hubble's law
the Doppler effect
background radiation
Answer:
Option A (dark energy) is the right answer.
Explanation:
A hypothetical supplier of power that creates a force that contradicts gravity, which is assumed to have been the catalyst of accelerated universe development. Hypothetically, dark energy counteracts the kinetic energy including its beginning of the globe, meaning that perhaps the multiverse does not have intrinsic curvature, although observational measurements presently indicate.Some other three choices have no relation to the particular situation. Thus option A would be the right solution.
Answer:
A
Explanation:
The arrangement of leaves on a tree branch that reduces overlapping and overshadowingof leaves from sunlight is referred to as leaf …………………………………………………………This ensures exposure of most of the leaves to sunlight for maximum ……………………………………………..to take place in the ………………………………………………………………………of leaf cells. The grana contains numerous……………………………………………molecules which trap light………………………………….for ………………………………………………….of water, producing ………………………………………atoms required for the process of carbon (IV) oxide…………………………………………………………in the light……………………………………………………………stage of photosynthesis which takes place in the……………………………………………..of the chloroplast.
Answer:
phyllotaxy
photosynthesis
chloroplasts
chlorophyll
energy
oxidation
oxygen
reduction
independent
stroma
Explanation:
The arrangement of leaves that provide maximum exposure to sunlight is referred to as leaf phyllotaxy that reduces overlapping and overshadowing of leaves and supports maximum photosynsthesis.
The contains numerous chlorophyll molecules that trap the light energy for the oxidation of water and producing oxygen (O2) atoms required for carbon (IV) oxide reduction in light-independent, which takes place in the stroma of the chloroplast.
Hence, the correct answer in a sequential manner is as follows:
phyllotaxy
photosynthesis
chloroplasts
chlorophyll
energy
oxidation
oxygen
reduction
independent
stroma
11. The governments of many countries have regulations
that are designed to prevent the accidental
introduction of nonnative insects into their countries.
This is because, in these new habitats, the nonnative
insects might
1) become food for birds
2) not survive a cold winter
3) not have natural predators
4) add to the biodiversity
Answer:
The answer is 3. Not have natural predators.
Explanation:
Nonnative insects in new habitats mean that there are no predators there that eat them. This means that choice 1 will be eliminated. Now choice 2 also isn't it since if the insects do not survive a cold winter, there wouldn't be any nonnative insects in the habitats, causing no need to have strict regulations. Between choices 3 and 4, 4 doesn't make any sense. If it adds to a habitat's biodiversity, the ecosystem will benefit from it. However, the nonnative insects will harm the ecosystem, causing choice 4 to be eliminated. This means that only choice 3 is left. Choice 3 also makes sense since the nonnative species are also invasive species, having no natural predators in the new habitat. So, the answer is 3. Not have natural predators.
Which two organisms are most closely related, based on the tree above?
Answer:
dinosaurs and birds
Explanation:
Which refers to the process of going against the natural flow of heat and moving thermal energy from a low
temperature to a high temperature?
radiation
refrigeration
heating
O conduction
Answer:
conduction
Explanation:
Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. ... These vibrating molecules collide with their neighboring molecules, making them also vibrate faster. As these molecules collide, thermal energy is transferred via conduction to the rest of the pan.
Answer:
conduction
Explanation:
I got it right
Tara placed a grape in a solution, after sometime she noticed that the grape started to shrink.
a. Name the solution and explain.
b. Then Tara placed the raisin in a solution and noticed it started to swell up. Name the solution and explain
Answer:
a. Hypertonic solution
b. Hypotonic solution
Explanation:
There are basically 3 types of solutions in biology,
1) Isotonic-Same concentration of solute and solvent inside the grape and in the solution.
2)Hypotonic solution-More concentration of solvent in the solution than in the grape.
3)Hypertonic solution-More concentration of solvent in the grape than in the solution.
Now,
a. Tara had kept the grape in a hypertonic solution. The solvent will start draining from the grape to equalize the concentrations of solvent inside and outside. So, the grape shrank due to loss of water.
b. Tara kept it in a hypotonic solution. The solvent will start entering the grape to equalize the concentrations of solvent. So, the grape started swelling.
punnet squares are a useful tool in genetic studies. Which of the following describes the most likely use of this tool?
a. To quantify proportions of offspring with polygenetic traits
b. To determine the genotypic ratios of crosses
c. To determine frequencies of recombination
d. to measure phenotypic variability
Answer:
B
Explanation:
To determine the genotypic ratios of crosses
The __________ is a layer of cells that surrounds an axon and helps to accelerate the transmission of information. a: soma b: nerve c: myelin sheath d: axon terminal
Answer:
C: myelin
Explanation:
its the substance that surrounds nerve cell axons
4. What happens when an enzyme is denatured? I
Answer:
in the air
Explanation:
poop
Which of the following is a testable hypothesis?
a. Roses are more beautiful than violets.
b. A plant needs at least five hours of sunlight per day to grow.
c. I've cream is delicious.
d. Humans will someday land on Mars.
Answer:
D. Humans will someday be on mars
Ergogenic aids can be useful in some circumstances, some are possibly useful but still under study, and still others are downright dangerous and illegal. 1. human growth hormone.
2. anabolic steroids
3. creatine
4. caffeine
5. beta-hydroxy-beta methylbutyric acid (HMB)
6. branched-chain amino acidsA. The use of_____may improve performance for those who undertake repeated bursts of activity, such as in sprinting or weightlifting.B. Consuming small amounts of_______can increase menta alertness. C. Consuming______may enhance muscle recovery after intense physical activity. D. An ergogenic aid that increases muscle mass but may also cause uncontrolled growth of the heart or other organs and is banned by the International Olympic Committee is______.
Answer:
Using beta-hydroxy-beta methylbutyric acid (HMB) can improve performance for those who perform explosive repetitions of activity, such as running or lifting weights. Consuming small amounts of caffeine can increase mint alertness. C. The consumption of branched-chain amino acids and creatine can improve muscle recovery after intense physical activity. D. An ergogenic aid that increases muscle mass but can also cause uncontrolled growth of the heart or other organs and is prohibited by the International Olympic Committee: anabolic steroids.
Explanation:
In the answer I leave you the text with the blanks completed ... It is also important that you know that amino acids are important for the formation of muscle mass and its recovery, in addition to creatinine.
On the other hand, these supplements are administered in people who have high performance in sports, and accompanied by a good diet and specific diet, otherwise they will not work.
Anabolics are chemical structures that promote energy reserves and anabolism for muscle tissue hypertrophy, but they do not have a selective effect on the skeletal muscle, but rather affect other parts of the body, that is why they are risky, cause heart failure, cardiovascular, liver, kidney, and even possible alterations of the gallbladder.
Which would have a bigger effect on an organism, an error during transcription or a point mutation?
Answer: Point mutation would have a bigger effect on an organism.
Explanation:
Which statement most accurately describes what the medicine bag symbolizes to Martin’s grandpa? It symbolizes his connection to his family members and his way of life. It symbolizes his hope that Martin will one day live on the reservation. It symbolizes the sacred dream he had during his vision quest. It symbolizes the deer that his father had killed long ago.
Answer:
A
Explanation: family members
Answer:
A
Explanation:
What are two ways the excretory system helps the body maintain homeostasis?
Answer:
1.Osmoregulation
2.Thermoregulation
Explanation:
1.Osmoregulation is the maintenance of constant amount of water in the body of an organism.The kidney is responsible for this phenomenon as in it has a nephron in which at a particular part of the nephron,i.e the conducting tube which sites a hormone called the anti diuretic hormone which makes the walls of the conducting tube permeable to allow the movement of water from the urea back into the body before it is transferred into the bladder for to be released into the external environment.
2.Thermoregulation involves the maintenance of heat in the body of an organism.The skin is responsible for this process.It has hairs which lie on the surface of the skin to loose heat to the external environment during the hot days and also stands on the surface of the skin which trap a film of air on the skin surface to prevent heat loss in the cold days.
I HOPE IT'S OK?
Answer:
The kidneys control the amount of water, ions, and other substances in the blood by excreting more or less of them in urine. The kidneys also secrete hormones that help maintain homeostasis.
Explanation:
Which form of hypoxia reflects poor O2 delivery resulting from too few RBCs or from RBCs that contain abnormal or too little hemoglobin?
a. hypoxemic hypoxia
b. ischemic (stagnant) hypoxia
c. anemic hypoxiad. histotoxic hypoxia
Answer:
c. Anemic hypoxia
Explanation:
Hypoxia is a health condition in which the body or a region of the body is not adequately supply with oxygen at the tissue level. Types of hypoxia include:
Hypoxemic hypoxia is a condition in which their is low level of oxygen in blood in the arteries due to the inability of the lungs to properly oxygenate blood.
Ischemic (stagnant) hypoxia is a type of hypoxia that occurs due to a decrease in blood flow preventing adequate blood supply to tissues.
Anemic hypoxia occurs when the ability of the blood to carry oxyegen is reduced due fewer red blood cells or red blood cells that contain little or abnormal hemoglobin molecules hemoglobin molecules.
Histotoxic hypoxia is hypoxia in which the cells are unable to use oxygen from the bloodstream, even though there is normal delivery of oxygen to such cells and tissues. This is due to the poisoning of the cells or tissues causing a disruption in their respiratory mechanism, for example in Cyanide poisoning.
Therefore, the correct answer is anemic hypoxia.
