Humans cannot survive on the surface of Mars for long periods of time because:
A) there is not enough oxygen in the atmosphere
B) the range in temperature between day and night is too large
C) the flux of ultraviolet radiation reaching the surface is too high
D) the atmospheric pressure would be too low
E) all of the above are valid reasons

Question

Quizplus · Accepted Answer

All the options listed are valid reasons why humans cannot survive on the surface of Mars for long periods of time. There is not enough oxygen in the atmosphere to sustain human life. The range in temperature between day and night can be extreme, with temperatures dropping to around -80 degrees Celsius at night. The flux of ultraviolet radiation reaching the surface is also high due to the thin atmosphere, which can cause health problems. Finally, the atmospheric pressure is extremely low compared to Earth, which makes it difficult for humans to breathe and can cause health problems.

Humans Cannot Survive on the Surface of Mars for Long