The term is known as TROPHIC LEVEL...........
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
Tumor cells are cells that divide relentlessly, forming solid tumors or flooding the blood with abnormal cells.
The answer is A. macromolecules
There are 4 types of macromolecules; lipids, proteins, carbs and nucleic acids
C i think . Hope this helps