What is one possible reason that hydroelectric power isn't used more across the state? A Coal is more readily available.
B. Runoff that accumulates causes pollution
C. Dam construction is expensive,
D. Overuse causes flooding.
Answered

The answer should be a.

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !