Dry air contains roughly (by volume): All the above are relatively small, light, non-polar molecules, characteristics mimicking an ideal gas. At normal ambient conditions such as standard temperature and pressure, most real gases behave qualitatively like an ideal gas.
provide - take measures in preparation for; provide for the proper care of the passengers on the cruise ship gear up, prepare, ready, set, fix, set up - make ready or suitable or equip in advance for a particular purpose or for some use, event, etc; Get the children ready for school!; prepare for war; I was fixing to leave town after I paid the hotel bill
Verb. 1. nourish-provide with nourishment; We sustained ourselves on bread and water; This kind of food is not nourishing for young children. nurture, sustain. cater, ply, provide, supply-give what is desired or needed, especially support, food or sustenance; The hostess provided lunch for all the guests.