I believe it would be A.) The creation of atomic nuclei!
Pioneer species are the first organisms to live in an uninhabited area.
Embryology provides evidence for evolution because during their development, many organisms look similar, suggesting that very different organisms may have a common ancestor.
Answer: continental glacier
Explanation:
These glaciers are very big and they can cover large amounts of land. These can also cover very large islands. Continental glaciers are the answer.