English, asked by umakanth25920, 3 months ago

what are the four principal biological systems​

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Answered by pdaksh405
4

The earth has four principal biological systems. These are: fisheries, forests, grasslands and croplands. They form the basis of the world's economic

Answered by Anonymous
2

Answer:

The earth has four principal biological systems. These are: fisheries, forests, grasslands and croplands. They form the basis of the world's economic system.

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