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

1. tropical deciduous forest
2. temperate evergreen forest
3. temperate deciduous forest
4. tropical rain forest

Correct answer: tropical rain forest

Solution

Tropical rain forests have the highest net primary productivity because they receive abundant sunlight, high rainfall, and warm temperatures throughout the year. These conditions allow plants to photosynthesize continuously with little seasonal limitation.

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