A molecule made up of three oxygen atoms and reduces the amount of harmful UV radiation that reaches earth

Which of the following statements best explains why there tends to be a greater number of large cities in southern africa than the east africa

One of the main reasons societies settled along rivers in the neolithic era was because a) the village elders demanded it. b) the land there was more valuable. c) it was more safe and secure there. d) it provided irrigation for farming.

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water