Which statement best explains the energy conversion that takes place
in animals?

chemical to mechanical and thermal

Explanation:

if its eating food to moving around

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

b brown mice / white sand dunes