Which structure in leaves allows the gaseous reactants and products of photosynthesis to move in and out?

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?

How do cells grow and reproduce to maintain homeostasis?

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance