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.

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.