How many types of shells of earth are name them

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

How does central place theory explain patterns in the size and distribution of cities?

The world wars of the twentieth century immediately led to a. the establishment of a communist bloc in eastern europe b. the urbanization of europe’s societies c. an emphasis on humanism d. an emphasis on ties to greek and roman societies select the best answer from the choices provided. a b c d