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: Unlike wild animals, what type of species are genetically uniform, making them more vulnerable to die-out from disease? Answer: domestic species
answer:
Wild plants and animals maintain a valuable pool of genetic variation . This is important because domestic species are genetically uniform. This puts them at great risk of dying out due to disease.

question:
Question: Alpha emission is a type of what? Answer: radioactivity
answer:
One type of radioactivity is alpha emission. What is an alpha particle? What happens to an alpha particle after it is emitted from an unstable nucleus?.

question:
Question: Hardness, density, color, and melting and boiling points are all considered what types of properties? Answer: physical
answer:
Physical properties include color, density, hardness, and melting and boiling points.