Describe how liquids react and look like​

What arrow on the map points to an air mass moving toward a cold front

Im is in a crowd of people at the mall looking for his girlfriend tammy, who was supposed to meet him for dinner. jim realizes tammy is across the room as he catches a whiff of her overpowering perfume, 'paris #6'. which process explains why jim is able to smell the perfume?

20 the compound al(nh3)2 has atoms of nitrogen.