Diversity depends on climate, attitude, soils and the presence of other species, biodiversity is not distributed evenly on earth. It is richer in the Polar Regions. In the year 2006 large number of Earths species were classified as endangered or threatened species.
Most of the hot spots are located in the tropics and most of them are forests.
For example, Brazil’s Atlantic forest contains roughly 20,000 plants species, 1350 vertebrate species, and millions of insect species, above half of which occur nowhere else in the world.
Biodiversity found on rough today is the re of 4 billion years of evolution.
United evidence suggested their until 600 million years ago, all life consumed of bacteria and similar single called organisms.
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