The biological wealth of this planet benefits us from diversity of life is :-
1. Humans are heterotrops they depend on natural resources fully if there is no oxygen animals and humans would not be able to live in. Amazon rain forest provides about 40% of oxygen to humans and other sources are diatoms.
2. Food like cereals, pulses, fruits it all use to come from plants even tannins, lubricants, dyes, resins, perfumes all are the products comes from nature
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