Part of the earth occupied by living beings known as the biosphere, which includes all areas of land, air and water of the planet Earth. Biosphere region is ranging from 8 km above the earth's surface, to 8 km below the ocean surface. Living organisms are not uniformly distributed in the biosphere, only a few species of organisms that live on the surface of perennial ice in the south pole or north pole on Earth. Instead forest is very rich in species diversity.
Biosphere large, complex and difficult to learn, so that ecologists prefer to work with smaller units of the biosphere, which is called the ecosystem. An ecosystem consists of the physical description of a particular region (abiotic factor) and living organisms (biotic factors) contained in the region. Abiotic factors in the tropical rainforest ecosystem consisting of abiotic factors such as soil, water, temperature, humidity, wind, sunshine. While plants, animals, such as rabbits, birds, mice, lions and other biotic component of ecosystems is a tropical rainforest.
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