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If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected, because

1. energy flow will be blocked
2. herbivores will not receive solar energy
3. mineral movement will be blocked
4. rate of decomposition will be very high

Correct answer: mineral movement will be blocked

Solution

Decomposers break down dead organisms and wastes, releasing minerals back into the ecosystem for reuse by producers. If they are removed, nutrient recycling stops, so mineral movement through the ecosystem is blocked.

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