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i need 9 sentences about tundra biomes

http://www.kidcyber.com.au/topics/biometundra.htm

http://www.ucmp.berkeley.edu/exhibits/biomes/tundra.php

http://www.blueplanetbiomes.org/tundra.htm

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Did you know that tundra biomes are some of the coldest and harshest environments on Earth? Covering about 20% of the Earth's surface, these regions are found in the Arctic and Alpine regions. The word "tundra" comes from the Finnish word for "barren land," which accurately describes their treeless and stark landscapes. Despite the extreme conditions, various plant and animal species have adapted to survive in tundra biomes. Snowy owls, Arctic foxes, and musk oxen are just a few iconic examples of wildlife found in these regions. The permafrost, a layer of permanently frozen soil, is a defining characteristic of tundras. Beneath the surface, there is a layer of soil that remains frozen year-round, preventing the growth of deep-rooted plants. Many migrating bird species rely on tundras as breeding grounds during the summer months before returning to warmer climates. Due to climate change, tundras are experiencing significant changes, with melting permafrost and shifting plant and animal populations. Understanding and conserving this unique biome is crucial for maintaining Earth's delicate ecosystems.