Identify two major on marine ecosystems that are caused by human

two major things is pollution and overfishing.

Explanation:

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one centimetre is equal to 0.01 metres

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.