Why does the troposphere vary in thickness? A.) Warmer air dissipates into the stratosphere. Cooler air is trapped in the troposphere.

B.) Cooler air contracts lowering the height, warmer air expands raising the altitude.

C.) Water vapor weighs down troposphere and less water vapor cause it to rise higher.

D.) Air turbulence in the troposphere varies the altitude.

c, liquids evaporate, creating a gas

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.