What does to squeeze a gas into a smaller space mean?

Youre basically allowing the gas to have room to roam free in a large container. When you "squeeze" it into a smaller space, there is less room to move and thus the atoms bounce off of each other more often.

You are allowing gas to travel anywhere it wants to

Nps pollution is caused by rainfall or snowmelt moving over and through the ground. nonpoint source pollution can include: excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. oil, grease and toxic chemicals from urban runoff and energy production

It equals just about 6,300 km per hour each day an week