The nile valley and the delta are areas with

abundant rainfall

cool temperatures

a high standard of living

a high population density

A high population density

Explanation:

The Nile valley and delta are the areas that has high population density as the Nile river surrounding and their grounds are very fertile. The climate of the delta and the Nile river valley is suitable and easy for doing activities like agriculture and farming.

The people can easily survive here as it contain large amount of fresh water and good environment. The climate of the bile valley and delta are less harsh as compared to others. Therefore, people find efficient climate and environment.