Answer:
The forest, maybe the atmosphereExplanation:
if you need more help
ask me
single-nucleotide polymorphism, I think this might be it. I hope it helps.
Answer: germ theory
Explanation: Germ theory of disease is a theory in biology. It says that small organisms (called germs), also known as microbes, cause diseases. Most, but not all diseases are infectious diseases. The germ theory states that small organisms cause a reaction in the body of those who are infected. The body's reaction to infection is called a disease.
Reference: Wikipedia
