Q 1368801705.     Which of the following changes would be likely to make terrestrial life on this planet impossible?

A

A decrease in mean temperature by 10 degree C

B

Disappearance of the moon.

C

Change in the orbit of the earth from an ellipse to a surface of the earth.

D

Change in atmosphere permitting the entire solar radiation reaching the upper atmosphere to penetrate to the surface of the earth.

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