Why might there be an increase in the number of opium farms in southeast asia? declining prices for existing crops soaring prices for opium purchasing power of their currency declining all of the above

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

Pollution from one country can affect another. for example, south korea is especially affected by pollution and dust storms that come from

Ocean crust is a. made from submerged continents b. magnetically produced crust c. produced at mid-ocean ridge d. produced at all plate boundaries