System that protects, regulates temperature, and prevents water loss

Describe characteristics of a good respitory surface

The sea slug that considered to be a photosyntheesizing animal

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.