Aball is projected into the air. describe the change(s) in potential and kinetic energy. a) potential energy decreases and kinetic energy increases. b) kinetic energy increases and potential energy decreases. c) potential energy decreases while kinetic energy increases; then kinetic energy decreases and potential energy increases. d) kinetic energy decreases as potential energy increases; once at the top, potential energy decreases as kinetic energy increases.

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.

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.