How genetic variations in a population increase some individuals probability of surviving and reproducing in a specific environment

Cells destroy body cells infected by a virus or bacteria.

Why do oceanic plates tend to subduction when colliding with a continental plate

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.