The rock in the picture is pushed over the edge and it begins to fall. which type of energy conversion is taking place?

a) mechanical to heat

b) sound to mechanical

c) potential to kinetic

d) kinetic to potential

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.

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

Which is a function performed by stem cells in the skin a. replacing lost skin cells b. making cells for the intestines c. growing new organs d. differentiating into brain cells plz apex