the physical landscape of africa is characterized primarily bya. two mountain ranges separated by a large valley. b.a series of plateaus. c.rain forests and deserts. d.deserts, rivers, and rain forests.

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons