What happens when air gets warm? A. It sinks.

It rises.
What happens when air gets warm?

A. It sinks.

B. It rises.

C. It flows.

D. None of the above.

How should the student cite this source using mla citation format?

How did the grooms national product (gnp) of the united states change between 1940 and 1944

Which statement is true about women's suffrage? a. women won the right to vote during theodore roosevelt's presidency. b. women won the right to vote during reconstruction c. women won the right to vote after world war 1 d. women won the right to vote during the spanish-american war