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I visited my first tropical rain forest earlier this summer and I’m just curious what is the dif between those two
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Besides the consistent amount of rainfall, tropical rain forests tend to have tall broad leaf trees (evergreen, etc) that can grow beyond the canopy (upper most habitat level.) The finely grown trees will then form the tree crowns at top, which pretty much covers up most of the sunlight. The lack of sunlight causes the growth of fast-growing plant life to be inhibited, giving advantage to a more diverse range of plants to slowly take root.
Jungles, on the other hand, may not always have the consistent rainfall attributes of rain forests. For the ones that do share semi/pre-rain forest condition, they usually do not have a diverse and wide tree crown on the top. This causes more sunlight to get through, giving faster growing plants much greater advantage to grow and expand. Hence, lowering the plant diversity relative to a tropical rain forest.