fraction

But this trait accounts for only a tiny fraction of our DNA.

-I like that we finally got to one you can do the fractions of.

It's not just increasing as a fraction and overwhelming ordinary matter, but ordinary matter, as the universe expands, its density decreases because it's constant and the volume gets bigger, the density drops.

And when we ask that, we are asking something about what neurons in different parts of their brain did a fraction of a second ago.