What is a risk? a. attempt to attack some weakness b. some bad thing that might happen c. weakness that may be exploited d. likelihood that an attack will succeed against a weakness?

B)that some bad thing might happen.

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 !