How to form an hypothesis on the effects of ph on enzymes?

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?

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above