A. carbon dioxide It goes into the atmosphere and theres carbon emissions
Answer:
Cell membrane
Explanation:
"The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell."
The pulmonary artery
The pulmonary artery carries deoxygenated blood to the lungs.
It is c because my brother had the Same problem
A. A magnet always has two poles