Fingernails are made of protein and keratin. Gypsum is softer than a fingernail.
A shows no correlation since the dots are randomly scattered
Through nutrients absorbed through the soil and their roots.
Answer:
The Puffins would have to find more food sources and the beaks would change accordingly to the food source they are going after.
The stem cells divide through mitosis making two daughter cells. One daughter cell becomes a stem wall, and the other daughter cell differentiates into the tissue, so therefore stem cells maintain their populations because mitosis produces a daughter cell that differentiates, as well as one that self-renews, remaining a stem cell. Good luck, and hopefully this helps you out!