Respuesta :
Answer:
cardon dioxide
Explanation:
opens up to breath carbon dioxide. releases oxygen for humans to breath. it absorbs water from the roots.
Answer:
B my guy
Explanation:
Stoma control the flow of gases in and out of leaves. During the day, when air temperatures rise and carbon dioxide levels are normal or above normal, the stomata open, allowing carbon dioxide to enter and photosynthesis to take place.