What four variables used to describe a gas

Volume, temperature, pressure and amount.

Explanation:

The Four Gas Law Variables: Volume, Temperature, Pressure, and Amount. All gases must be enclosed in a container that, if there are openings, can be sealed with no leaks. The three-dimensional space enclosed by the container walls is called volume.

Explanation:

that would be because of both gravity and friction. so     c

a skateboard rolling across the street - apex