The nervous system of a clam is very simple. how can a clam function with such a simple nervous system?

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.

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above