What phase change requires a substance to absorb energy? Select all that apply. condensation
condensation

melting
melting

evaporation
evaporation

sublimation
sublimation

freezing
freezing

hey there!

so, when you eat, your teeth chew and grind food into smaller pieces. this is mechanical digestion. then reactions aided by digestive enzymes break down large food molecules into smaller molecules. this is chemical digestion. the two processes change the food into simpler substances that can be used by the body for raw materials and energy.

hope this

tobey

yes? sounds right, but you didn’t ask a question.

voluntary muscles are controlled by the cerebellum.