Multiple choice

Which of the following statements is correct?

  1. The life cycle of aquatic organisms is called the water cycle.

  2. Our Earth is covered by three-fourths of water.

  3. A variety of salts, like magnesium and potassium, are present in saline water.

  4. Rain harvesting causes the problem of depleting the ground water.

  5. Ocean and sea water contains many dissolved salts and is beneficial for drinking, agriculture and domestic purposes.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct. A variety of salts, like sodium chloride, calcium, magnesium, and potassium are present in saline water.

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