Describe how sumer met the three criteria of a civilization. use specific examples.
they had surplus amount of food, a division of workers, and something else

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.

the first forms of writing came from them in the form of pictographs around 3100 bc.