Deserts are defined by the lack of precipitation, and in fact, Antarctica is also a desert - so we can reject the first and last option since they're not typical of Antarctica.
most deserts are characterized by drastic differences in temperatures: so the best answer is: c. a huge difference between minimum and maximum daily temperatures
Earth’s atmosphere has layers of gas surrounding it, our planets atmosphere is retained by it's gravity.
Earths Atmosphere contains;
78% Nitrogen
21% Oxygen
0.97% Argon
0.04% Carbon Dioxide
This mixture of gas is known for as air.
