<span>it's colder the higher you go, a big body can retain heat better</span>
Enzymes, or digestive juices, are secreted by the pancreas into the small intestine. There, it continues breaking down food that has left the stomach. The pancreas also produces the hormone insulin and secretes it into the bloodstream, where it regulates the body's glucose or sugar level.
Answer:
Evolution is a major force in shaping modern classification methods.
Hope it helped...........
