The basic unit of structure and function of living things is the?

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous

Amajor source of energy for your body comes from

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.