1 is The first one
<span>2 is the third one
3 is the second one
4 is the 4th one</span>
The reaction is low b/c of the tempature. that's why.
Are you speaking of a density gradient, in which a more concentrated solution moves below a less concentrated solution?
In that case, the more concentrated solution has the greater density, and it will gradually sink below the less concentrated solution.
In the same way, a stone will sink in water, which is less dense than the stone.
I believe it was James Hutton
