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Standard XII
Zoology
Question

A more conservative and specifically sound estimate about the total number of species present on earth, was made by
  1. Robert May
  2. Paul Ehrlich
  3. David Tilman
  4. Both A and B.

A
Paul Ehrlich
B
David Tilman
C
Robert May
D
Both A and B.
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Solution
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A more conservative and scientifically sound estimate about the total number of species present on earth, was made by Robert May.

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