Plz
what event began the paleozoic era

question 1 options:

agriculture

fish ate all of the blue green algae.

bacteria released oxygen into the atmosphere.

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