Question

Consider the following statements: (1) The

Earth’s magnetic field has reversed every few hundred thousand years. (2) When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide. (3) When living organisms originated, they modified the early atmosphere of the Earth. Which of the statements given above is/are correct?

A 1 only

B 2 and 3 only

C 1 and 3 only

D 1, 2 and 3

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UPSC EPFO (APFC)

Question

Consider the following statements: (1) The

Solution

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