Endosymbiosis refers to the co-existence of living matter where one organism lives within the body or within the cells of another organism.
(C.) The layers of the Earth are uniform in thickness
This is untrue. The mantle is far large than the crust and there are other large size differences.
Answer:
Nonmetallic
Explanation:
I just took the assignment and I am Big Brain.
One method I know of is comparing a sample of the rock to other samples which the scientist already knows the age of. I forgot what this method is called but I know it's used by lazy scientists that use other scientist findings like the age of a rock to compare to their own work
