What were the two big changes in the lifestyle of Ur and his family during this chapter (don't include religious belief), who was most responsible for these changes, and how did Ur respond to the changes?

One huge change is Ur's shift from hunting to agriculture. Ur's wife introduces agriculture into Ur's hunter-gatherer lifestyle. He learns to plant, builds a dike, and expands their wheat crop. Ur responded to these changes by spending more time in the fields and less time hunting.

As a result, life changes include agriculture and self-sufficiency.