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CBSE Class 6 Answered

P, Q and R are the three gaseous components of air. Gases P and Q can dissolve in the water of rivers, lakes and seas but gas R does not dissolve in water. The organisms S which live in water use the gas P dissolved in water to make their food by the process of photosynthesis. All the organisms which live in water use the gas Q dissolved in water for releasing energy from food. Gas R is the major component of air. (a) What are gases (i) P (ii) Q and (iii) R? (b) Name the organisms S. (c) Name a gas like R which does not dissolve in water.
Asked by Topperlearning User | 23 Apr, 2014, 12:58: PM
answered-by-expert Expert Answer

(a)

(i) P: Carbon dioxide gas

(ii) Q: Oxygen gas

(iii) R: Nitrogen

(b) Plants make use of gas P dissolved in water to make their food.

(c) Methane gas does not dissolve in water.

Answered by | 23 Apr, 2014, 02:58: PM
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