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Amazon rainforests are considered as 'lu...

Amazon rainforests are considered as 'lungs of the planet' as they contribute______of the total oxygen in the earth's atmosphere.
(a) 10 %
(b) 15 %
(c) 20 %
(d) 30 %

A

A - Siberian, B - 30

B

A - Temperate, B - 20

C

A - Alpine, B - 15

D

A - Amazon, B-20

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The correct Answer is:
D
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