What is the main conclusion of the passage?

What is the main conclusion of the passage?
  1. The relationship between species richness and ecosystem health is not understood
  2. The loss of a few species does not matter
  3. Rich biodiversity is essential for ecosystem health and the survival of the human race
  4. The relationship between species richness and year:to:year variation in total biomass is not understood

Solution

Rich biodiversity is not only essential for ecosystem health but imperative for the very survival of the human race on this planet.

Asked in: NCERT

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