B. Embryos are being collected by the student on the field trip.
The answer is b, for he is comparing the two rocks to find an age relative to the other
I believe it relates because as we know the cell membrane is permeable meaning that allows oxygen, carbohydrates, food to enter the cell but it doesn't allow the entrance of large molecules that harm the cells.
After all the movement around it, matters because for example without food the mitochondria won't be able to create the energy and then with that energy, the nucleus to use it to complete the main the activities of the cell.
Hopefully this what you meant when you asked the question. Have a nice day/evening
False, they are inexhaustible. If we were to use the resource as much as possible, it would exhaust and not be able to be used again.