Which one of the following ecosystem types has the highest annual net primary productivity?

Temperate deciduous forest

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Tropical rainforest

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Tropical deciduous forest

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Temperate evergreen forest

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Solution

The correct option is A Tropical rainforest
The tropical rainforest is a hot, moist biome found near Earth's equator.Tropical rainforests receive from 60 to 160 inches of precipitation that is fairly evenly distributed throughout the year. The tropical rainforest has highest annual net primary productivity (9000 K cal / m 2 / yr). Net primary productivity is the rate at which all the plants in an ecosystem produce net useful chemical energy.
Therefore, the correct answer is option B.

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