Which statement best describes the greenhouse effect?
a. infrared radiation escapes into space.
b. ultraviolet radiation enters a planet's atmosphere producing a green haze
c. visible radiation is trapped by the atmosphere.
d. infrared radiation is trapped by the atmosphere.
e. oxygen escapes from the atmosphere.
Question 2
Since Mars's axis is tipped 25.2o to its orbit, it experiences ____.
a. seasons
b. day and night
c. extreme temperature fluctuations
d. solar eclipses
e. auroras