English, asked by shifali42, 5 months ago

Answer the following in about 120 words.
1. What are the four principal biological systems of the earth according to Mr. Lester
Brown? How do they sustain humanity? What would happen to them if they are over
exploited by man?

(Class 11th Hornbill Ch:-5 The Ailing planet:the green movement's role)

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Answered by bhawralal

0

Answer:

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