The explanation for refraction must involve a change in

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?

Which statements best describe energy? check all that apply. the total amount of energy in the universe remains constant. the total amount of energy in the universe changes constantly. energy cannot be converted from one form to another. energy can be converted from one form to another. energy cannot be created or destroyed. energy can be created or destroyed.

All phase changes are .an example of a phase change is an ice cube melting