On hot days the stomata (openings in plant leaves that let CO 2 enter and O 2 escape) close to prevent water loss [200 water molecules evaporate for every CO 2 that diffuses into the leaf].
(openings in plant leaves; enter; T:On hot days) (every CO 2; diffuses; into the leaf) (plant leaves; let; ) Context(plant leaves let,List([37, 58))):(200 water molecules; evaporate; for every CO 2)
plant leaves let,List([37, 58))
openings in plant leaves every CO 2 plant leaves 200 water molecules
enter diffuses let evaporate
T:On hot days
into the leaf
for every CO 2