Answer:
A plastic bag because the others would ruin the evidence the cotton would absorb the blood same with the envelope , paper bag.
Explanation:
I would say immigration only.
emigration would theoretically reduce the genetic variation as unique individuals leave, but immigration would bring unique traits into circulation in an ecosystem.
I'm not super great at biogy tho so this might not be right... :)
Hello, Saleemsafwah12. The answer would be A - It is younger than the rock layer below. This is because the deeper you go, the older the rock is, opposed to the top layer being the youngest of them all. I hope I helped!! Have a great day.
We live in the troposphere, which is where we get our air from
