Most hot deserts ____________.

Question

Quizplus · Accepted Answer

Hot deserts have very little vegetation, dry air, and little cloud cover, which leads to significant cooling at night. This is because the lack of vegetation means there is no transpiration or absorption of heat from the sediment at the surface, so the heat accumulated throughout the day is quickly radiated back out into space. The temperature can drop by as much as 20°C or more at night in some hot deserts. Option A is incorrect because hot deserts cool off significantly at night. Option C is also incorrect because a drop of 8°C is not significant enough given the high daytime temperatures in hot deserts.

Most Hot Deserts ____________