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: Hair and nails are made of what? Answer: keratin
answer:
Hair and nails are made of keratin, a tough protein.

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

question:
Question: What term is used to describe major changes in the genetic material? Answer: chromosomal alterations
answer:
Chromosomal Alterations. Chromosomal alterations are major changes in the genetic material.