Animal Evolution. But first….some review! Unlike plants, animals have… A.Cell membranes B.Histone proteins C.Cell walls D.Centrioles E.Glucose molecules.
What is an Animal?. Characteristics of Animals All animals have several characteristics in common. What are the four common characteristics of animals?
Animal Evolution. I. Animal traits A. Heterotrophic B. Mobile C. Lack cell walls D. Possess nerve and striated muscle.
Nutrient cycling is strongly regulated by vegetation. When plants are not present, nutrients are lost from the system. pages 1213-1214 Fig. 54.21.
