Deforestation is not a natural change.
Fluid, rolling, air resistance, and not sure about the last one.
Answer:
If that is a picture of DNA, then nucleic acids are the most common macromolecule
Explanation:
Anthrax is a rare bacterial disease spread by animals, insects, and mosquitoes. Victims may feel ill or have skin ulcers and difficulty breathing. I believe that you can find how it was used in a (story I believe in your case) by trying to find its significance of it to the story. Try to imagine what the story would be like without it? Does it change the ending?
Hope this helps!
C Skin Cancer! uv rays are very bad