Became suitable sites for new civilizations like mesopotamia because they provided arable land and sources for irrigation. a. coastal plains b. mountainous regions c. tropical forests d. river valleys

Suggest two reasons why irrigation is important for human development of the desert

For one week be an inventor and write down ideas for products or services that you think should be produced

Can someone me choose a broad topic and area of focus i am really doing this as a tally to see which one most people pick ok water pollution global warming endangered species atmosphere for the !