Cosmos part 1 mix and match

Average annual precipitation and are the two major features that define the biomes on earth.

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.

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy