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Q. The given pie diagram represents different components of the soil. Identify P, Q and R and select the correct option.
image
P Q R
(a) Water Biota Mineral salts
(b) Mineral salts Biota Water
(c) Mineral salts Water Biota
(d) Biota Water Mineral salts

Ecosystem

Solution:

Soil has five components with different compositions: Mineral matter - $40\%,$ water - $25\%$, organic matter - $10\%$, air-$25\%$ and soil organisms (variable).