Answer:
plants
Explanation:
all green life gives us oxygen, and in turn we give c02 or carbon dioxide
The drugs that are found are <span>Tar, </span><span>Carbon monoxide,</span><span> Nicotine and</span><span>Emphysema </span>
If the element has not become an ion yet, then there is 73 electrons.
Number of protons = number of electrons**
**only when the element has not form an anion or cation.
This is carbon monoxide.
hope this helps!