Tundra means rolling treeless plains. The average weather is frigid and dry winters with cold and moist summers. In North America, arctic tundra is found in northern Alaska, Canada, and Greenland.

Vegetation in Arctic tundra regions is limited due to dry conditions, poor soil quality, frigid temperatures, and permafrost. Arctic tundra plants must adapt to the cold, dark conditions of the ...

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The largest sources of nitrous oxide emissions, though relatively small per unit area, came from the dry tundra and boreal forests. Calculated over 100 years, the combined contribution to global ...