Climate change,Deforestation,<span>Pollution</span>
I think the two sources would be drip irrigation which is like a river, lake, groundwater, etc... The second source could be is making a new irragation system that could deliver water faster.
Answer:
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I think it's a)oil because it bring wealth into the region they are needed for much of the world's economy. ... Over half of the world's known oil reserves are found in this part of the world
