What happens she humans burn fossil fuels

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

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.