The answer is B An observation about the number or amount of something
Answer:
movement to and fro or around something, especially that of fluid in a closed system.
The answer is when levels of the amino acid are high, it binds to the repressor, ending the synthesis of this amino acid
Structurally, DNA and RNA are nearly identical. However, there are three fundamental differences that account for the very different functions of the two molecules. RNA has a ribose sugar instead of deoxyribose sugar like DNA.
The term used to describe the number of individuals moving into a population is Immigration.
