Answer: Atmosphere
Explanation:
Atmosphere is the part of the earth, known as the gaseous part, since it contains gases such as nitrogen (about 78%), oxygen (about 21%), Carbondioxide (about 0.03%), and rare gases to make the rest.
Thus, atmosphere contains the most whole of oxygen and carbon dioxide
I think its acid fermentation, but I could be wrong. My class studied this a while ago.
What holds the two strands of DNA molecules to each other. Hydrogen Bonds
