Tropical forests are one of earth’s major biomes. They are an extremely important biome for many reasons. Tropical forests provide large amounts of oxygen and clean the air through photosynthesis, they provide habitat for an extremely large amount of plants and animals and many plants found in the rainforest are used in the production of medicines. Tropical rainforests are found near the equator and are characterized as being hot, humid and rainy. The rainforest is so dense that it is broken up into a canopy (upper layer) and understory (lower layer/ground level). Tropical rainforests are disappearing at an alarming rate due to development, farming and logging.