Question

what is a unique feature of polar air masses?
a. high temperatures
b. high humidity
c. uniform cold and dryness
d. large amounts of rain
what occurs during frost melt?
a. ice refreezes
b. polar night begins
c. ice and snow thaw, releasing water
d. wind chill increases

Explanation:

First Question (What is a unique feature of polar air masses?):

Polar air masses originate in polar regions, which are cold. They are also typically dry. Option a is incorrect as polar regions are cold, not high temperature. Option b is wrong as polar air masses are dry, not high humidity. Option d is incorrect as they don't have large rain amounts. Option c matches the cold and dry nature of polar air masses.

Frost melt means the ice (frost) turns to liquid water. Option a is refreezing, not melting. Option b, polar night, is unrelated to frost melt. Option d, wind chill increase, is not related to the melting process. Option c describes ice and snow thawing (melting) and releasing water, which is what happens during frost melt.

Answer:

c. Uniform cold and dryness

Second Question (What occurs during frost melt?):