Biomes of the world. Tundra, desert, grasslands and forest.

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Arctic Tundra

  • The Arctic tundra is a cold, vast, treeless area of low, swampy plains in the far north around the Arctic Ocean.
  • This is the earth's coldest biome.
  • The sun does not rise over for nearly six months of the year, so winter temperatures can be below -30°F in winter.
  • A permanently frozen subsoil, called permafrost, which makes it impossible for trees to grow.
  • Frozen prehistoric animal remains have been found preserved in the permafrost.

Coniferous Forest

  • The coniferous forest biome is south of the Arctic tundra. It stretches from Alaska straight across North America to the Atlantic Ocean and across Eurasia.
  • The largest stretch of coniferous forest in the world, circling the earth in the Northern Hemisphere, is called the “taiga.”
  • It supplies the bulk of the world's commercial softwood timber, which is used to make paper.
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Deciduous Forest

  • This biome is in the mild temperate zone of the Northern Hemisphere. Major regions are found in eastern North America, Europe, and eastern Asia.
  • Deciduous trees lose their leaves in fall.
  • The natural decaying of the fallen leaves enriches the soil and supports all kinds of plant and animal life.
  • It is a lively place, where oak, beech, ash, and maple trees are typical, and wildflowers, berries, and many types of insect and animal life are found.

Desert

  • A desert is an area where little or no life exists because of ...

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