The primary reason ancient people of the nile river valleys built leaves, dikes, and reservoirs was to?

Describe how gravity and convection work together to move the plates in the plate tectonics theory

Which is relatively better: a score of 76 on a psychology test or a score of 22 on an economics test? scores on the psychology test have a mean of 90 and a standard deviation of 13. scores on the economics test have a mean of 52 and a standard deviation of 10.

The patriot act made it easier for law enforcement agencies to conduct surveillance under certain circumstances true or false