Consider the following statements with respect to Biosphere 1 It is a highly interact...........

Environment and Ecology Biodiversity

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Consider the following statements with respect to Biosphere:

1. It is a highly interacting and integrated zone where life can exist.

2. Scientifically the height of biosphere has upper limit as 20,660 feet.

3. Biosphere is absent at extremes of the North and South poles.

Which of the following statement(s) is(are) incorrect?

2 only

3 only

2 and 3 only

All the above statements are correct

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Explanation:

Biosphere is that part of the earth where life can exist. It is sphere of confluence of atmosphere, lithosphere and hydrosphere. The height of biosphere, scientifically speaking, exists 660 ft. below the surface and 20,000 ft. above the surface. This makes the total height of the biosphere as 20,660 ft. Biosphere is absent in the extreme climates of north and south pole. Therefore, none of the statements are incorrect and hence answer D is justified.