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    Hi there, there are some things related to the Arctic tundra that I can't quite get my head around.

    1) Why is the arctic and alpine tundra treeless? I don't quite get it... I understand that it's because it's not warm enough and trees don't last long enough in the growing season, but why do plants need warmth? Don't they just need light to photosynethesise and the enzymes don't need heat?

    2) Why is the Tundra just considered as 60o North? What about the Antarctic region and South Pole etc, is that considered as Arctic tundra too?

    Many thanks.
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    Sorry if this is in the wrong section.
 
 
 
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