Chapter 8: Water: A Precious Resource

Q&A -Ask Doubts and Get Answers

Water: A Precious Resource


Choose the correct option. The total water:

(i) in the lakes and rivers of the world remains constant.

(ii) under the ground remains constant.

(iii) in the seas and oceans of the world remains constant.

(iv) of the world remains constant.


About 71% of Earth’s surface is covered with water. About 70% of water is present in the human body. About 0.006% of the total water present on the earth is available for use. Almost all water on the Earth is contained in the seas and oceans, rivers, lakes, ice caps, groundwater, and in the atmosphere. The total water present in the world are constant.

Hence, the correct answer is (iv) of the world remains constant.

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