Which is the name for the opening in a sponge through which the sponge expels wastes?
a Coelom
b Osculum
C Notochord
d None of the above

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