How is an amphibian heart different from that of a fish and a mammal?

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

What best describes the dropping height of a ball that bounces back up to a height of 45 cm

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.