The organism number gets smaller from kingdom to species. Kingdom includes all the plants or animals and species includes the same type of plant or animal. Generally plants or animals. There are actually six kingdoms but the same rule applies.
The tropical rainforest has a moderate temperature with seasonal changes. The amount of rainfall in a tropical rainforest is high. It has a thick canopy of trees which filters out a majority of the sunlight which is why the forest floor is almost shaded.