What is tundra?

World’s coldest and driest biomes

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  • Located at latitudes 55° to 70° North( circumnavigating the North pole)
  • 3 types of tundra: Arctic tundra, alpine tundra, and Antarctic tundra
  • vast and treeless land which covers about 20% of the Earth’s surface
  • cold, and the land is pretty stark
  • low growing plants like mosses, heaths, and lichen
  • covered with marshes, lakes, bogs and streams(When melt)
  • insects and many migrating birds
  • main seasons are winter and summer
  • winds can blow between 30 to 60 miles per hour

Direct changes on tundra because of global warming

  • Winter temperatures have increased
  • Snow and sea ice coverage have shrunktundra
  • unprecedented mass-melting
  • glaciers are in retreat throughout the Arctic

Deeper influence according to these changes

  • The permafrost is starting to melt
  • pent-up carbon is already leaking into the air in the form of  CO2 and CH4 powerful greenhouse  gases
  • They release CO2 and CH4 into the air as by products, gases that warm the planet by trapping heat energy from the sun
  • allow plants to grow vigorously
  • suck up huge amounts of carbon out from the atmosphere through photosynthesis(perhaps even enough to cancel out greenhouse gas emissions from the soil)
  • Arctic soils harbour two to three times more carbon than is currently aloft in Earth’s atmosphere

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