I believe it is D all of the above
Answer:
D fossil record
Explanation:
Depending on what layer of earth the fossil was recorded then they could determine a rough date. Then they would use carbon dating to be more exact.
The answer is A.) Sister chromatids of the same chromosome! Hope this helps dear! and if u can please put me as Brainliest! thanks
Answer: The sodium-potassium pump system moves sodium and potassium ions against large concentration gradients. It moves two potassium ions into the cell where potassium levels are high, and pumps three sodium ions out of the cell and into the extracellular fluid.
Explanation:
