4-Growth, maintenance, balance fluids, maintain proper hp
2-Actin, collagen
Copernicus' model: "Sun-centered," or "heliocentric"
Copernicus thought that the planets orbited the Sun, and that the Moon orbited Earth. ... Copernicus was correct about some things, but wrong about others. The Sun is not in the center of the universe, and it does move, as do the stars.
The answer is a Reptile.
Because it lives in water (also out) and has rough skin.