English, asked by jhymbridgem, 3 months ago

a) What are the Earth's principal biological systems? Describe the
effect of human activity on them?​

Answers

Answered by jasmithabalakrishna1
2

Answer:

There are four principal biological systems of the earth. They are fisheries, forests, grasslands and croplands. They form the foundation of the global economic system. ... Human demands on these systems are increasing to a point where their productivity is impaired.

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