Answer:
Mass of a pure substance is directly proportional to it's density.
Explanation:
When the size of a pure substance increases, it's density increases too. And when the size of the substance decreases, the density decreases too.
The answer is C because a lipid is a plant and of course a fat is what we have in our bodys
Those that do not show artificial selection are examples A and B.
"A" I think... Sorry if its not right...