A biotic factor in a tropical rainforest is a population of decomposers.
Biotic factors may be defined as those factors which are associated with living entities. These include producers, herbivores, carnivores, and decomposers.
Rainfall, temperature, air quality (wind), stream, and fire are examples of abiotic factors.
Therefore, a biotic factor in a tropical rainforest is a population of decomposers.
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