The outer layer of the Earth can be divided on different compartments: the hydrosphere (or sphere of water), lithosphere (or sphere of soils and rocks), and the atmosphere (or sphere of air). The biosphere is the living material on the planet. It grows well in the other three areas, although there are no permanent inhabitants of the atmosphere. In relation to the volume of the Earth, the biosphere is only the very thin surface layer that extends 11,000 meters under sea level to 15,000 meters above. Usually is thought that life first developed in the hydrosphere, at shallow depths in the photic zone.
(However, currently it is estimated that life originated around hydrothermal vents in the deep ocean). Then, in time, multicellular organisms appeared and colonized benthic zones. Photosynthetic organisms released through chemical reactions, the gases to reach the current levels, especially the abundance of oxygen, which characterize our planet. Terrestrial life then developed, protected from UV rays by the ozone layer. Diversification of terrestrial species is thought to have been increased by the continents drift apart, or at least alternately strike. Biodiversity is expressed at the ecological level (ecosystem), at the population level (intraspecific diversity), species (species diversity) and genetic level. The biosphere has large quantities of elements such as carbon, nitrogen, hydrogen and oxygen. Other elements such as phosphorus, calcium and potassium, are also essential for life, are still present in smaller amounts. In the ecosystem and biosphere levels, is a permanent recycling of all these elements, which alternate between the mineral and organic states. To learn more about partial discharges from entering.
(However, currently it is estimated that life originated around hydrothermal vents in the deep ocean). Then, in time, multicellular organisms appeared and colonized benthic zones. Photosynthetic organisms released through chemical reactions, the gases to reach the current levels, especially the abundance of oxygen, which characterize our planet. Terrestrial life then developed, protected from UV rays by the ozone layer. Diversification of terrestrial species is thought to have been increased by the continents drift apart, or at least alternately strike. Biodiversity is expressed at the ecological level (ecosystem), at the population level (intraspecific diversity), species (species diversity) and genetic level. The biosphere has large quantities of elements such as carbon, nitrogen, hydrogen and oxygen. Other elements such as phosphorus, calcium and potassium, are also essential for life, are still present in smaller amounts. In the ecosystem and biosphere levels, is a permanent recycling of all these elements, which alternate between the mineral and organic states. To learn more about partial discharges from entering.
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