Answer:
Drought in the Sahel in the 1970s and 1980s made it look like the desert was expanding, because the reduction of rainfall at the desert margin (the Sahel) caused a reduction in vegetation. Warm, moist air rises near the equator, then cools and condenses its moisture, which falls as rain or snow
It seem like it's C,I feel like it's C,Hope that helps
Well, in the case of mortality, this could be true. I say this because developed countries have better technology. This technology can be used in the hospitals to treat the sick. However, in developing countries, there is not much technology available for all these, so people may die of curable illnesses. Hope i helped.