Answer:
Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.
glucose is the monomer used as the main source of energy
The answer is four hope this helps
Benthos describe organisms that live on or in the ocean floor.
Well, we can rule out diffusion and osmosis because these are passive processes, so we're left with A and C. I'd say A, because the energy is used in muscle contraction.
