Precipitation forms by the ice crystal process when:
a. clouds contain both ice crystals and liquid droplets.
b. the liquid droplets within a cloud are supercooled.
c. cloud temperatures are below freezing.
d. All of these choices.
Question 2
The collision-coalescence process of precipitation formation is effective when:
a. cloud temperatures are above freezing.
b. cloud temperatures are below freezing.
c. clouds are composed exclusively of ice crystals.
d. None of these choices.