instruction:
Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
question:
Question: What contains most of the structures found in skin? Answer: dermis
answer:
Structures of the Dermis. The dermis contains most of the structures found in skin.

question:
Question: What type of cell layer do flatworms have? Answer: mesoderm
answer:
Flatworms have a mesoderm cell layer and simple organ systems. They also show cephalization and bilateral symmetry.

question:
Question: What element chemically weathers rock by combining with a metal? Answer: oxygen
answer:
Oxygen chemically weathers rock by combining with a metal.