Ecology focuses on O A. ways to address environmental pollution and overpopulation.
O B. how organisms relate to each other and their environment.
O
C. how human activities affect the environment.
the relationship between economics and biology.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Why zebra fish experience similar genetic disease as human

Achange in which factor will affect the rate of reaction only when gases are involved? temperature pressure surface area concentration