Why is water useful for life on the earth?
(i) It maintains ecological balance.
(ii) It sustains life.
(iii) It is necessary for respiration in aquatic organisms.

Only (i) and (ii)

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Only (ii) and (iii)

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Only (i) and (iii)

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(i), (ii) and (iii)

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Solution

The correct option is D (i), (ii) and (iii)
Water is useful for life on the earth to maintain ecological balance, for sustaining life and it is also necessary for respiration in aquatic organisms.

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Why is water useful for life on the earth? (i) It maintains ecological balance. (ii) It sustains life. (iii) It is necessary for respiration in aquatic organisms.

The correct option is D (i), (ii) and (iii)Water is useful for life on the earth to maintain ecological balance, for sustaining life and it is also necessary for respiration in aquatic organisms.

Why is water useful for life on the earth?
(i) It maintains ecological balance.
(ii) It sustains life.
(iii) It is necessary for respiration in aquatic organisms.

The correct option is D (i), (ii) and (iii)
Water is useful for life on the earth to maintain ecological balance, for sustaining life and it is also necessary for respiration in aquatic organisms.