The tropical forest ecosystems cover less than 10 percent of earth’s surface, and contain about ___ percent of the world’s species

The tropical forest ecosystems cover less than 10 percent of earth’s surface, and contain about ___ percent of the world’s species

Q. The tropical forest ecosystems cover less than 10 percent of earth’s surface, and contain about ___ percent of the world’s species

A.            30

B.            50

C.            70

D.            90

Answer: 90

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