Chapter 772

Qin Feng naturally wouldn't be stingy either.

"Everything between heaven and earth that cannot be seen or touched can be considered air."

Qin Feng thought for a moment and finally gave this answer.

Although he knew that the composition of air was mainly nitrogen and oxygen,

in addition to a tiny amount of rare gases like radon, helium, neon, argon, krypton, and xenon,

water vapor as the source of life,

and carbon dioxide which causes the greenhouse effect,

but let alone the people of this world, even Qin Feng himself couldn't figure out what those rare gases actually were.

Let alone explaining it to others.

So, it was better to just speak in general terms. ===== CHAPTER 774 =====