What are political maps and what information can they provide?

Which of the following describes what rocks usually are composed of ,

The chemical or mechanical process by which rock is gradually broken down eventually becoming soil

Which of the following statements best describes what is occurring in the land surrounding the sahara desert? a desertification is increasing, and the desert is expanding. b. fewer people are trying to farm in this semiarid region. c. the desert is shrinking with the increased use of irrigation. d. increased urbanization has resulted in decreased deforestation. select the best answer from the choices provided mark this and return save and exit next submit