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The mean net productivity of two biomes ...

The mean net productivity of two biomes are given. Analyse them and answer the following questions.
Tropical rain forest - 450 kg/ sq. km
Desert - 15 kg/sq. km
a. Why does the productivity of deserts become less than that of tropical rain forest ?
b. From the above data analyse the importance of plants in the existence of life.

Text Solution

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a. In desert the annual rainfall is less than 10 inches. The day temperature ranges from `100^(@)F` to `135^(@)F`. It is the most driest ecosystem in the environment. So the productivity of desert becomes lesser.
b. In tropical rain forest the vegetation consists of luxuriant mass of trees and other plants. Plants are the producers of an ecosystem. So the productivity of tropical rain forest is high.
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