The tundra is near the North Pole and occupies a fifth of the Earth's surface. The most distinctive trait of the tundra soil is its permafrost. Plants have adapted to the cold climate of the tundra. Lichen is made of fungus and algae that allows it to grow on rocks and the dwarf-willow grow tightly together and low to the ground to protect themselves from the cold.
Biotic Factors: Native Animal and Plant Species
Biotic Factors: Invasive Animal and Plant Species
- N.d. Photograph. GoogleWeb. 26 Oct 2013. <www.google.com>.
- "Tundra." BluePlanetBiomes. BluePlanetBiomes. Web. 26 Oct 2013. <http://www.blueplanetbiomes.org/tundra.htm>.
- Global Invasive Species Database. issg. Web. 26 Oct 2013. <http://www.issg.org/database/species/search.aspst=sss&Image1.x=28&Image1.y=7&sn=&rn=&hci=5&ei=-1&lang=EN>.