What is the contour interval on this map?

75ft

25ft

50ft

100ft​

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

Which statement best explains distribution of natural resources? people tend to settle in locations that have the resources they need for survival. some countries have resources that others lack, so trade between countries becomes vital. fossil fuels come from areas that have mountains and other areas that manufacture synthetic gas. areas with natural resources provide a higher standard of living and better quality of life.

If scientists only detect p waves in a certain layer of earths interior what does that tell us?