Genetically Modified bacteria can be harvested for Insulin using the process Mitosis and doing so they can asexually reproduce identically and make clones making them all have the insulin producing gene. If you would like a better explanation, it won't bother me if you ask:)
Answer:
When the inside of the Earth was liquid, gravity caused the heavier elements nickel and iron to sink to the center. Lighter elements floated to the surface. Over time this process caused the Earth to separate into layers.
Explanation:
