The illustration shows bones in four animals. The bones labeled as A are known as and offer evidence of a common ancestor.
penguin
A
bat
alligator
human
extinct structures
sequential structures
analogous structures
homologous structures

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present