8. What type of air masses form over land in polar regions? cold and dry air masses
warm and dry air masses
cold and wet air masses
warm and wet air masses

The answer is cold and dry air masses:)

Explanation:

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )