Too much of it is covered by Urbanization. That which isn't is covered by trees, lakes, marshes and other flora and fauna.
Earth has about 15% or 20% of plant existents.
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it wouldn't do much i guess it will lower carbon emissions
Probably virtually all of it. Centuries of farming have made the countryside the treeless areas that they are now, no farms = lots of trees.
The area covered by 8,400 trees can vary significantly depending on the species and planting density. For example, if the trees are spaced about 10 feet apart, they could cover roughly 2 acres (about 0.8 hectares). However, this estimate can change based on the size and growth habits of the trees, as well as the specific planting arrangement.
There are different types and sizes of mountains -- plus they can be covered with different plants, trees, rocks, snow, water, ice, etc. etc. -- so one answer can not be given.
area covered by china
Yes there are trees, though much of the Arctic is tundra and permafrost. Part of the boreal forest extends into the Arctic, though it gradually transitions into a lower taiga as one goes north. On Greenland, for example, there are no trees though.
Something
As of 2013, the amount of money that you win on Britain\'s Got Talent is $160,370.00 in US dollars.
At the time of Britains conversion to decimal currency in 1971, 15 Shillings converted to £1.50 GBP.