Question

Q. Consider the following statements with reference to sedimentary rocks:

Which of the above statements are correct?

• A.
  1 and 2 only
• B.
  1 and 3 only
• C.
  2 and 3 only
• D.
  1, 2 and 3

Answer 1

The correct option is D

1, 2 and 3
Explanation:

Sedimentary rocks make up about three-quarters of the rocks at the Earth's surface.

Statement 1 is correct: Sedimentary rocks preserve a record of the environments that existed when they formed. By looking at sedimentary rocks of different ages, scientists can figure out how climate and environments have changed through Earth's history.

Statement 2 is correct: Quartz, K-feldspar and muscovite are some of the important minerals found there.

Statement 3 is correct: Fossils of ancient living things are preserved in sedimentary rocks too, which provide a history of life including human evolution.