Question

How are the earths principal biological system being depleted 1 english?

Answer 1

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Answer 2

Explanation:

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Mr Lester R Brown has pointed out in his book ‘The Global Economic Prospect’ that there are four principal biological systems of the earth. These are : fisheries, forests, grasslands, and croplands.

They form the foundation of the global economic system.

In addition to supplying our food, these four systems provide virtually all the raw material for industry except minerals and petroleum-derived synthetics.

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