The grouping of animals into phyla is based on a. size b. appearance in the fossil records c. being extinct versus being extract d. complexity

All phases of matter may have a fixed mass

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down

In an hydrogen ion pump the energy is used to join small molecules together to make larger ones which factor most likely has the greatest effect on the number of molecules mitochondria can produce