Name a natural polymer

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

Which of the following graphs have the same wavelengths

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"