Why are fewer animal species in grasslands a.grasslands have fewer habitats
b.temperatures in grasslands vary more
c.rainfall is low in grasslands
d.the amount of solar energy is high in grasslands?

Answers

Answer 1
Answer: I think it can be C or D. But I think it's D.

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Is a source of genetic variation that refers to a random error in the genetic code.

Answers

Mutations is  source of genetic variation that refers to a random error in he genetic code

Answer: Mutation

Explanation:

A mutation is a random change in a cell's genetic code due to a variety of causes. The change can be small and insignificant, or it can be major. Mutations can be passed onto offspring through reproduction, thus increasing the genetic variation within a population.

Muscles make up more than how much of a person's body mass? A. 10%
B. 25%
C. 40%
D. 75%

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muscles make up more then 40% of a persons body mass, so the answer is C.

Answer:

c.

Explanation:

Describe how the frog uses its front and hind legs to jump

Answers

 All frogs have short front legs and large strong hind legs for jumping . The hind feet are webbed, and most frogs are fast swimmers.

What is the answer ? to both questions#23 & #24

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They should be Amino Acids as chains of Amino Acids form protein strands. If they were altered through tampering with the genome of an individual, the protein would change greatly as it would not be the same protein. 

This molecule controls cellular activity by directing the synthesis of

Answers

DNA is a molecule that controls cellular activity by directing the synthesis of proteins.

Where DNA is present?

The nucleus contains the cell's DNA and directs the synthesis of ribosomes and proteins. Found within the nucleoplasm, the nucleolus is a condensed region of chromatin where ribosome synthesis occurs.

Thus, DNA is a molecule that controls cellular activity by directing the synthesis of proteins.

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protein synthesis is controlled by DNA

Which force is responsible for waves and surface currents? a. heat
b. friction
c. gravity
d. pressure

Answers

Ocean tides are caused by the gravitation of the Moon. Currents can beformed by the flow of tidal water around the continental plates, or by adifference in water temperature between large ocean areas. Surfacewaves are caused by the wind. Abnormal waves can be created by thetectonic movement of plates around and under the ocean floor (tsunamis).So as you can see, the answer is (C) Gravity

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