High copper tolerance is found in the flowers found near copper mines.
Answer: C
Explanation: Earth's atmosphere isn't very dense because it is made of air, which floats. Human beings are denser then air since they are solid, but not as dense as Earth's crust, which is rocky and the densest out of the three.
I believe it is called evolution and you can see this with a genetics tree
Number 2 because they are still developing
Plant lets I think abcdefg
