Biotic Factors: The vast rain forests are full of many different types of plants. All of which must compete with the tall trees for sunlight. Many of the low-lying plants have developed broad leaves in order to collect as much sunlight as possible. Some plants grow on the branches of other plants by doing this they no longer have to compete for sunlight and can get nutrients from the plant they are living on, their host. The animals found in tropical rain forests are very active and have adapted camouflage to elude predators. Many organisms have also adapted to living high in the canopy region, and thus have acquired traits for climbing, jumping, or flying.
The tropical rain forest contains more species than all of the other biomes combined, in other words rain forests have the most diversity of all the other biomes. Much like the name suggests, rain forests receive an enormous amount of precipitation, in fact they receive at least 2 meters a year.
Abiotic Factors: The soils found on the rain forest floor are very thin and nutrient-poor, mainly because nutrients are frequently washed away with the frequent rains. They are wet and dry year round.