Answer:
An experimental group, also known as a treatment group, receives the treatment whose effect researchers wish to study, whereas a control group does not. They should be identical in all other ways.
Food chains model energy flow through an ecosystem. Producers pump energy into an ecosystem from an environmental source, and this energy is then passed from one organism to the next.
Answer:
D) The number of mitochondria has decreased due to long period of rest
You are correct :)
Explanation:
The basketball player requires energy so remember that the mitochondria is the powerhouse of the cell (so it produces energy).
The answer is B, pollution releases because it negatively affects the environment
