BIOLOGY HIGH SCHOOL

The age-sex structure of a quickly growing population would probably havea. a wide base, showing many young individuals.
b. a wide top, showing many older individuals.
c. a wide middle area, showing many middle-aged individuals.
d. all of the above

Answers

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Which of the following is NOT a potential harmful effect on human health resulting from climate change? A. malaria B. yellow fever C. heatstroke and heat-related illnesses D. respiratory problems E. schistosomiasis
Most plastics tend to persist in the environment because natural processes do not degrade them effectively. A scientist thinks that a new strain of bacteria can be developed to break apart plastics. To develop this strain of bacteria, the scientist proposes to subject a colony of bacteria to powerful mutagens.

What did Chargaff discover while studying bases in the DNA of organisms? The bases in the DNA of each organism were unique. The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine. The overall percentages of bases were different from one organism to the next. There were equal amounts of all four bases in every organism, or 25 percent of each base.

Answers

Answer: The correct answer is - The ratios of Thymine and Adenine were similar, as were the ratios of Guanine and Cytosine.

According to the Chargaff's rule, in a DNA molecule, the amount of Guanine (G) is equal to the amount of Cytosine (C) and the amount of Adenine (A) is equal to the amount of Thymine (T).

This is because A pairs with T and G pairs with C.

This means that the ratio of T and A are similar, as are the ratio of G and C.

The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine and Chargaff discovered this while studying bases in the DNA of organisms. The correct option among all the options that are given in the question is the second option. I hope the answer comes to your help.

Which statement represents a fact about the rock cycle?A. All the processes involved in the rock cycle occur beneath the surface of Earth.

B. Fossils, skeletal remains, and living organisms do not play a role in the rock cycle.

C. The rock cycle is driven by energy from the Sun as well as from the interior of Earth.

D. Every transformation between states happens as a result of heat from magma.

E. Nearly all rocks transition from one form to another on a human timescale.

Answers

The answer is : The rock cycle is driven by energy from the Sun as well as from the interior of Earth. The sun provides energy for surface processes such as weathering, erosion, and transport. This is the one of the major source of energy for the rock cycle. Weathering happens when there is a interaction with the air, water and organism which cause the rock to break down, and the pieces of rock are carried away by wind, moving water, etc. through erosion.

C for plato users :)

Sloths have less muscle than other mammals their size in order to _______.a. conserve energy
b. maintain a lower body weight
c. digest their food faster
d. maintain a higher body temperature

Answers

The specific adaptation of the sloths to their niche is energy conservation: they survive by trying not to loose any energy and trying not to move too much. They have less muscle because they don't need it: their adaptation is to move less. So the correct answer is to a) conserve energy.

Answer:

A) Conserve energy

Explanation:

I took the test

I need help before 12 o'clock please Which of the following statements describes rill erosion?
A. The population increases next to a shoreline.
B. Sand along a shoreline is repeatedly picked up by waves.
C. Sediment is deposited by a river.
D. Running water cuts small channels into a slope.

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The correct answer is D. Running water cuts small channels into a slope. That's because the running water's force is stronger than the resistance of the land. This causes erosion to occur and the water to carry the material from the land with it, creating a little channel that is usually not that deep but it can go to great lengths.

What is variation among members of different species called?

Answers

Answer:

I think inter-specific variation.

Explanation:
Different phenotype? I think

Describe some ways that human activities are affecting aquatic ecosystems. Propose strategies that individuals can use and governments can implement that would prevent or reduce these human impacts.

Answers

Answer:

Humans are heavily polluting the waters in many areas with chemicals, medicine (for people), and garbage. A way that the government can help stop this issue is to have groups do routine cleanings of natural bodies of water along with prohibite the use of disposable items in the area like cups and/or bags.

Explanation:
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