Questions
Which of the following ecologists has tried to put price-tags on nature's life support services?
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By Expert Faculty of Sri Chaitanya
a
David Tilman
b
Robert Constanza
c
Paul Ehrlich
d
Robert May
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Correct option is B
Robert Constanza and his colleagues have very recently tried to put price tags on nature’s life-support services. Researchers have put an average price tag of US $ 33 trillion a year on these fundamental ecosystems services, which are largely taken for granted because they are free.Paul Ehrlich- rivet popper hypothesisDavid Tilman- long-term ecosystem experimentsRobert May places the global species diversity at about 7 million.Similar Questions
Out of the total cost of various ecosystem services , the soil formation accounts for about –
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