And the earth brought forth grass, and herb yielding seed after his kind, and the tree yielding fruit, whose seed was in itself, after his kind: and God saw that it was good. Genesis 1:12 
"The stomata of plants:
---These tiny gates permit the exchange of gases, adjusting
automatically to day/night cycles and environmental cues they read from sensors in the leaves. The guard cells around the openings adjust their turgor pressure to open and close according to the needs of the plants. It’s a marvelously sophisticated system that is exquisitely functional to a high degree of precision."
CEH
