Answer:
B)
Explanation:
Natural selection describes how organisms change, and adaptation explains why. Charles Darwin, theory.
Answer:
B
Explanation:
It's Charles Darwin's theory
A compound formula is found to contain 31.42% sulfur, 31.25% oxygen, and 37.23% fluorine by mass.
Calculate the molecular formula if the molar mass is 204 g/mol
Explanation:
the answer is in the image above
pleas help... pleas help pleas help!!!!!
Refer to the chart in Figure 10: Effects of Surface Gravity, to see what someone would weigh on different planets.
If you weighed 130 pounds on Earth, you would weigh _____ pounds on the moon.
21.6
25.0
241
216
Answer: See explanation
Explanation:
Your question isn't complete as you didn't attach the chart.
The weight on the Moon of an individual is 16.5% of the person's weight on Earth. For example, if one weighs 100kg on Earth, then the person will weigh 16.5kg on the moon.
Based on the question, since the person's weight on Earth is 130 pounds, then the weight on the moon will be:
= 16.5% × 130pounds
= 0.165 × 130 pounds.
= 21.45 pounds
The closest answer to this is 21.6 pounds
Answer:
The other person is correct!!!!
Explanation:
explain how thermal pollution can impact on the quality of water biodiversity
HELP PLS ASAP
2. Complete the following chart about the three main research projects
that led to the identification of DNA as the genetic material.
RESEARCHERS' NAMES
SUMMARY OF RESEARCH
SUMMARY OF CONCLUSIONS
Griffith
found a "transforming principle"
Avery
Hershey and Chase
identified the substance that phages inject
into bacteria
Answer:
Griffith's experiment, reported in 1928 by Frederick Griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation. Griffith's findings were followed by research in the late 1930s and early 40s that isolated DNA as the material that communicated this genetic information.
Griffith's experiment discovering the "transforming principle" in pneumococcus bacteria.
Pneumonia was a serious cause of death in the wake of the post-WWI Spanish influenza pandemic, and Griffith was studying the possibility of creating a vaccine. Griffith used two strains of pneumococcus (Streptococcus pneumoniae) bacteria which infect mice – a type III-S (smooth) which was virulent, and a type II-R (rough) strain which was nonvirulent. The III-S strain synthesized a polysaccharide capsule that protected itself from the host's immune system, resulting in the death of the host, while the II-R strain did not have that protective capsule and was defeated by the host's immune system. A German bacteriologist, Fred Neufeld, had discovered the three pneumococcal types (Types I, II, and III) and discovered the quellung reaction to identify them in vitro. Until Griffith's experiment, bacteriologists believed that the types were fixed and unchangeable, from one generation to another.
In this experiment, bacteria from the III-S strain were killed by heat, and their remains were added to II-R strain bacteria. While neither alone harmed the mice, the combination was able to kill its host. Griffith was also able to isolate both live II-R and live III-S strains of pneumococcus from the blood of these dead mice. Griffith concluded that the type II-R had been "transformed" into the lethal III-S strain by a "transforming principle" that was somehow part of the dead III-S strain bacteria.
Completing the attached chart about the three main research projects ;
Griffith summary of research : Identified what R-strain bacteria took up from heat-killed S bacteria,Avery summary of research : Identified protein as not the transforming factorAvery summary of conclusion : Found a " transforming principle "Hershey and chase summary of conclusions : Found the " Infection and replication principle "All three researches were carried out to discover the genetic material ( DNA ) which is responsible for the transfer of genetic traits from parent cells to daughter cells.
Griffith research shows that bacterias can get there DNA ( genetic material ) through a process known as transformation and the experiment to prove this research was carried out by killing S bacterias through heat and then adding them to R-strain bacteria. Griffith observed and concluded that the Genetic materials of the S bacteria was taken up by the S -bacterias through a process known as " transforming principle "
During Avery research for the genetic material ( DNA ) Avery treated a mixture with DNA-destroying enzymes to see if the colonies of the mixture will transform but they failed to transform which proves that proteins are not the transforming factors and that DNA is the genetic material.
Hence we can conclude that Completing the attached chart about the three main research projects is as written above.
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Which layer refers to land?
oceanic crust
mantle
asthenosphere
lithosphere
Answer:
The lithosphere
Explanation:
One of the 7th graders in our school believes that absolute zero is possible on very cold days when it is snowing outside. Is he correct?
Answer: It depends on where u live it can go to the negatives and could be at 0 at some point
Explanation:
What can fossils tell us about past species. Choose all that apply. their life cycle their closest living modern relatives their age at death their extinction their potential evolution
Answer:
the correct answer is their extinction, their potential evolution, and their closest living modern
Explanation:
Have a good!! :]
Calculate: Punnett squares can be used to predict probable outcomes of genetic crosses. To calculate probability, divide the number of one kind of possible outcome by the total number of all possible outcomes. For example, if you toss a coin, the chance it will land on heads is equal to 1 ÷ 2. This probability can be expressed as ½, 0.5, or 50%.
How many total possible outcomes are there?
---------------------------------------------------------------------------------
Complete the table below to show the number of outcomes and the probabilities in both fractions and percentages.
I I
Number of Outcomes I Fraction I Percentage
--------------------------------------------------------------------------------------
FR FR
--------------------------------------------------------------------------------------
FW FW
--------------------------------------------------------------------------------------
FR FW
--------------------------------------------------------------------------------------
The polymer of proteins is called a
polysaccharide
amino acid
nucleic acid
polypeptide
Answer:
The answer is polypeptide.
Which takes place inside the chloroplast?
A. dark reaction only
B. light reaction and cellular respiration
C. light and dark reactions
D. light reaction only
Answer:
dark and light reaction both is the right answerrrerreer
Answer:
C
Explanation:
The light reaction takes place in the thylakoid discs. Inside, water (H20) is oxidized, and oxygen (O2) is released. The electrons freed up from water are transfered to ATP and NADPH. The dark reaction occurs outside of the thylakoids. In this reaction, the energy from ATP and NADPH are used to fix carbon dioxide (CO2). The products of this reaction are sugar molecules and other organic molecules necessary for cell function and metabolism.
*Note the dark reaction takes place in the stroma (aqueous fluid surrounding the stacks of thylakoids) and the cytoplasm.
Show the cross of two heterozygous cats.What percentage of their offspring will have folded ears? 75% folded (punnet square)
The punnet square is in the file, 75% folded and 25% straight ears
Black-footed ferrets are native to the Great Plains. They spend most of their
time underground in prairie dog burrows. Which factor would increase an
area's carrying capacity for black-footed ferrets?
A. Increased competition for space
B. Increased number of diseases
C. Increased number of predators
D. Increased availability of food
Answer:
D. Increased availability of food
Explanation:
Trust
The factor that would increase an area's carrying capacity for black-footed ferrets is the increased availability of food. The correct option is D.
What is carrying capacity?Carrying capacity is defined as the average population size of a species in a given habitat.
Environmental factors such as adequate food, shelter, water, and mates limit the species population size. If these requirements are not met, the population will decline until the resources recover.
If there is more food available in an area, more black-footed ferrets can survive and reproduce, increasing the species' carrying capacity.
Increased competition for space, more diseases, and more predators would all reduce the carrying capacity of black-footed ferrets by reducing the number of individuals that could survive and reproduce in the area.
Thus, the correct option is D.
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Recall Characteristics of Cells WARM-UP Choose the statements below that are true. Cells are the smallest unit of life. Cells are important to the structure and function of living things. All organisms are made of multiple cells. Cells come in different shapes and sizes. RETRY
Answer:
1.Cells are smallest unit of life.
2.Cells are important to the structure and function of living beings.
3.All organisms are made up of multiple cells.
5 Drag the tiles to the correct boxes to complete the pairs. Match the terms with their definitions.
Answer:
a sequence of DNA responsible for coding a protein = gene
The complex range of alleles an organism carries for... = genotype
an allele that determines... = dominant gene
the observable characteristics= phenotype
Which image shows a lunar eclipse happening?
Answer:
You didn't show any images
Explanation:
Based on Darwin's ideas of descent with modification and natural selection, which observation would best support the idea that
increased competition causes changes in a species?
A) A population of frogs develop greener skin after a hurricane blows away the white flowers in the environment
B) A population of artic foxes develop a brown fur color as warmer temperatures reduce the number of days of
snowfall in the area
C) A population of rattlesnake goes extinct as the water resources in their environment dry up during an
extreme, prolonged drought
D) A population of deer show an increase in antler size over time, which allows them to obtain more mates
during mating season
Answer:
D) A population of deer show an increase in antler size over time, which allows them to obtain more mates during mating season
Based on Darwin's ideas, a population of deer show an increase in antler size over time, which allows them to obtain more mates during mating season (Option D).
What is evolution?According to Darwin, evolution can be defined as descendence with modification, which mainly occurs via natural selection.
Natural selection can be defined as the differential survival and reproduction of the fittest organisms.In this case, intraspecific competition favors deers more adapted to reproduce in the population.In conclusion, based on Darwin's ideas, a population of deer show an increase in antler size over time, which allows them to obtain more mates during mating season (Option D).
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Match these items.
1. liquid part of blood —— cells
2. factory for red blood cells —— bone marrow
3. building blocks of tissues —— pulse
4. molecule that carries oxygen in the blood —— hemoglobin
5. smallest blood vessel plasma
6. heart chamber —— ventricle
7. heart contractions —— capillary
Paul Plutonian and Penelope Phobos also met online. Both of them are
heterozygous for their tall head, which is dominant over a short head.
Create a Punnett Square to show the possibilities that would result if Paul
and Penelope had children. (Hint: Read question 5.)
A. List the possible genotypes and phenotypes for their children.
B. What are the chances of a child with a tall head?
C. What are the chances of a child with a short head?
Answer:
A. HH - tall head, Hh - tall head, hh - short head
B. 75% or 3/4
C. 25% or 1/4
Explanation:
Paul and Penelope are heterozygous for their tall head, which means they have one dominant and one recessive allele. So, their genotype is Hh.
When crossed, the results are 1 HH - h0m0zygous dominant tall head, 2 Hh - heterozygous tall head, and 1 hh - h0m0zygous recessive short head.
So, there is a 75% of a child with a tall head and a 25% chance of a child with a short head.
Hope that helps.
Amino acids join together to create:
A.nucleic acids
B. carbohydrates
C. lipids
D. proteins
Plz do 10 and 14❤️❤️❤️❤️ Urgently
Answer:
lol
Explanation:
Answer:
lol i cant see it
Explanation:
Which structure produces blood cells?
A. Thymus
B. Lymphatic vessels
C. Bone marrow
D. Lymph nodes
Answer:
b. bone marrow
Explanation:
mark me brainliest
Answer:
Explanation:
C. Bone marrow
the following are examples of somatic cells, except?
Answer:
The only cells that aren't considered somatic cells in the body is the reproductive cells.
How long does a two toed Salamander live
Which event triggers the start of black hole formation?
Answer:
A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight. The collapse triggers a supernova explosion that blows off the star's outer layers.
Explanation:
Answer:
1. The universe's galaxies have evolved since what point in time?
2. Which proportion of the universe's galaxies can be seen from Earth?
3. Which was used to create the first image of a black hole?
4. Which of these describes a nebula?
5. Why are most stars not destroyed in a galaxy collision?
6. What do supernova remnant and planetary nebulae have in common? Select the three correct answers.
7. Which of the following is an accurate description of cosmic microwave background (CMB) radiation? Select the two correct answers.
8. Select the correct answers from the list.
The model of galaxy formation in which sections of gas clouds collapse into small pieces which repeatedly combine into larger pieces under the influence of gravity is called the ____ model or the ____ model.
9. Drag and drop the words into the correct locations. Answers may be used once, more than once, or not at all.
Galaxies can be grouped by the age of the stars they tend to contain, with ____ galaxies having the youngest stars and ____ galaxies having the oldest stars.
10. Which event triggers the start of black hole formation?
Explanation:
1. 13.8 billion years ago, right after the universe first formed
2. far less than 1 percent
3. radio waves from matter at the edge of the black hole
4. cloud of gas and dust
5. Galaxies are mostly empty space.
6. They emit non-visible radiation.
They are composed of matter from dying stars.
They contribute matter to interstellar space.
7. CMB is uniformly distributed and of a uniform temperature across the universe.
CMB is remnant radiation from the Big Bang.
8. inside-out / bottom-up
9. irregular / elliptical
10. A massive star depletes its stores of hydrogen and helium
what statement is true about fossils
Answer:
where are the statements?
Ok so you commented the Statements
So, The correct one is
a. fossils can tell us what animals looked like millions of years ago
If a muscle cell and a clown fish contains 28 chromosomes, a clown fish egg cell would contain:
A) 7 chromosomes
B) 14 chromosomes
C) 28 chromosomes
D) 42 chromosomes
E) 56 chromosomes
Answer:
D) 42 chromosomes
Explanation: egg cell= 14 chromosomes
clown fish= 28 chromosomes
( 28+14=42)
One variable increases, then the other increases, as well.
Which term would best describe this scenario?
A) positive correlation
B) hypothesis
C) transitional form
D) causation
Answer:
(Q1) One variable increases, then the other increases, as well.
Which term would best describe this scenario?
(Answer) positive correlation
(Q2) Which kind of evidence is used by scientists to understand the intermediate states between an ancestral form and that of its descendants?
(Answer) transitional fossils
(Q3) By studying the limbs and fossils of different animals, such as a horse leg and a human leg, scientists have noticed that there are similarities in their bone structures. This is evidence that their bone structures and limbs may have evolved in similar ways.
Which statement is true about this scenario?
(Answer) The scenario is describing a relationship known as correlation.
(Q4) A fossil indicates that whales might have started out as small land mammals. This animal was about the size of a wolf and had a diet of meat and fish. While the fossil has the body of a land animal, its head is shaped like a whale with an ear bone that is unique to whales.
Which statement is likely true about the fossil?
(Answer) It is a transitional fossil that shows a correlation.
(Q5) When Charles Darwin published his book On the Origin of Species, he addressed his theory of descent with modification through
(Answer) natural selection.
Explanation:
Trust Me Bro
During receiving of a food order, you notice a bag of rice with signs that the bag has been wet. What do you do?
Answer:
Dispose of the bag and check other bags in storage.
Explanation:
Dispose of the bag and check other bags in storage because in the food handlers book or something like that, it ca possible cause problems to the rice
Shondra takes notes in class.
Three entries in Shondra's notes are not in the right
place. What can Shondra do to correct her notes?
1. Energy
A Definition - the energy of moving objects
B. Main categories of energy
1. Kinetic - the ability to do work
2 Potential - the energy stored in objects
3. Chemical -- the energy in chemical bonds
C. Forms of energy
1. Gravitational - the energy of a rock on a hill
2 Elastic - the energy in a spring
3. Nuclear - the energy in the nuclei of atoms
4. Electromagnetic wave - the energy from the Sun
5. Electrical - the energy of flowing electrical charges
O Switch "the energy of moving objects" and "the
ability to do work" and place chemical energy under
"Forms of energy."
O Switch "the energy of flowing electrical charges" and
"the energy in a spring" and place kinetic energy
under "Forms of energy."
O Switch "the energy in the nuclei of atoms" and "the
energy stored in objects" and place nuclear energy
under "Main categories of energy."
O Switch "the energy from the Sun" and "the energy of
a rock on a hill" and place electrical energy under
"Main categories of energy."
Mark this and return
Save and Exit
Next
Submit
Answer:
I beileve its A because energy is what gives the ability to do work
Explanation:
Answer:
A
Explanation:
please have a great day.
You observe every fall that the trees in the forest lose their leaves, but by the following fall, the leaves have disappeared. The most accurate explanation for this observation would be:
The tree creates a layer known as the abscission layer, which prevents nutrients and water from reaching the tree and inhibits the growth of the leaves. Hormones in the trees cause the process of abscission.
What is abscission layer?Tiny tubules in the abscission layer are responsible for carrying carbohydrates back into the tree and delivering water to the leaf, flower, or fruit.
The amount of nutrients and water that pass through the tubes is decreased in the autumn because cells in the abscission start to expand and exude a waxy substance.
Abscission of leaves, which takes place in the fall, is the natural loss of an old leaf at the base of the petiole. Many physical and biochemical changes occur during leaf abscission, most of which are controlled by plant hormones.
Therefore, every fall that the trees in the forest lose their leaves.
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