Question

2. In Desert , why does the temperature vary in day and night ?​

Answer 1

Answer:

The temperature in the desert can change drastically from day to night because the air is so dry that heat escapes rapidly at night. The daytime temperature averages 38°C while in some deserts it can get down to -4°C at night.

Answer 2

Answer:

It is actually sand, which turns the entire phenomenon hot. Sand cannot hold the heat. ... During the daytime, it stays warm, and when the Sun is absent it loses all its heat making the nights colder. There's nothing in the desert that can either absorb heat from the sun or hold it on the surface when the sun is set.