50 to 75% of Canada’s water pollution issues comes from?

How does specialization enable countries to trade with one another? a country can make and sell goods affordably and buy goods that it is inefficient at making. a country can make what it chooses and sell its goods to other countries. a country can decide to buy everything it needs from other countries. a country can efficiently make goods that were once difficult to make.

Which powers best complete this graphic?

'nepal have varied vegetation as climate and landforms'. justify the statement