According to my brain the answer is natural gas
The theory of infinite universe and the theory of vacuum as a substance. First was disproved by the discovery of the big bang and the later by some experiments with light which have shown that vacuum is not a substance but empty space.
These are isotopes of that element. The nucleus is different because the number of neutrons differ and aren't the same. The number of protons are the same though.<span />
Unicellular
multicultural is usually found in loving things like plants or animals
