L17A
41.1 An animal's diet must supply chemical energy, organic molecules, and essential nutrients
41.2 The main stages of food processing are ingestion, digestion, absorption, amd elimination
41.3 Organs specialized for sequential stages of food processing form the mammaloan digestive system
41.4 Evolutionary adaptationd of vertebrate digestive systems correlate with diet
41.5 Homeoststic mechanisms contribute to an animal's energy balance