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 | Welcome to the <b>Animals / Wildlife Newsletter</b>, a weekly newsletter published by About.com's <a href="http://animals.about.com/">Animals / Wildlife website</a>. For more about animals and wildlife, be sure to stop by <a href="http://animals.about.com/b/">the blog</a> or browse the growing library of <a href="http://animals.about.com/od/zoology12/a/atozcommon.htm">animal profiles</a>. |
| The Biomes of the World
Biomes are large regions of the earth that share similar characteristics such as climate, soils, precipitation, plant communities, and animal species. Biomes are sometimes referred to as ecosystems or ecoregions. Climate is perhaps the most important factor that defines the nature of any biome but it is not the only one—other factors that determine the character and distribution of biomes include topography, latitude, humidity, precipitation, and elevation.
| Aquatic Biome
The aquatic biome includes the habitats around the world that are dominated by water—from tropical reefs, to brackish mangroves, to Arctic lakes. The aquatic biome is the largest of all the world's biomes—it occupies about 75 percent of the Earth's surface area. The aquatic biome provides a vast array of habitats that, in turn, support a staggering diversity of species.
| Desert Biome
The desert biome is, in general, a dry boime. It includes terrestrial habitats that receive very little rainfall each the year, generally less than 50 centimeters. The desert biome covers about one-fifth of the Earth's surface and includes regions at various latitudes and elevations.
| Forest Biome
The forest biome includes terrestrial habitats that are dominated by trees and other woody plants. Today, forests cover about one-third of the world's land surface and are found in many different terrestrial regions around the globe.
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