Geography

1 question

• 2018 · Question 57 · Physical Geography

  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 ?

  Choose your answer

  (a)1 only(b)2 and 3 only(c)1 and 3 only(d)1, 2 and 3

  Show answer

  Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)