Even though they only cover about percent of the earth's surface, rainforests contain more than of the thirty million plant and animal species in the world.

Even though they only cover about 8% of the earth's surface, rain forest contains more than ONE HALF of the thirty million plants and animal species in the world.
Rain forests typically receive at least 80 inches of rain annually. Rain forests usually have high temperature and high rainfall, these allow varieties of plants and animals to exist in this biome.