Answer:
a.monadioxide
Explanation:
for maintaince of different gases in the air to separate reactions of chemicals
Democritus believed that the universe was composed of atoms, correctly, of course. However, at the time, Plato's and Aristotle's hypothesi were just as valid because everyone was a philosopher. There were no scientists back then.
D. I hope you have a good morning
- Josie Annette
