Which statement describes all primary producers? a. all make energy-rich compounds that can be used by other organisms. b. all make their own food using the energy of compounds in the environment. c. all take in energy-rich compounds that were made by other organisms. d. all make their own food using the energy of sunlight.

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