Question

what are the earth principal biological system? explain how have humans exploited them?

Answer 1

Explanation:

The earth's principal biological systems are being depleted by excessive use. Over . fishing is quite common. Forests are being cut to obtain firewood for cooking.

Answer 2

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1.)

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. They supply us food. They all provide all the raw materials for industry accept minerals.

Human demands on these systems are increasing to a point where there productivity is impaired .

2.)

The earth's principal biological systems are being depleted by excessive use. Over . fishing is quite common. Forests are being cut to obtain firewood for cooking.

Grasslands are turning into barren wastelands and croplands are deteriorating as their productivity has been impaired.