Dupree is writing an article on primitive people. He has to write about the use of biomass in primitive times. What should he write? A. Primitive people used stones as tools. B. Primitive people used animals as pets. C. Primitive people used wood as a source of energy. D. Primitive people used coal for cooking food.

Whose work is most likely to be part-time and at several locations? а. physical therapistb. sports physicianc nutritionistd group fitness instructor

Construct at least two possible hypotheses for the student’s experiment.

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