Vitamin a plays an essential role in the human body in

1. preventing scurvy.
2. acting as an antioxidant and scavenging free radicals.
3. protecting polyunsaturated fatty acids (pufas) from oxidation.
4. maintaining healthy vision.

Depends on which disease, but as a general rule eat healthy. many vegetables.                                                        hope my answer has come to your . you for posting your question here in we hope to answer more of your questions and inquiries soon. have a nice day ahead! : )     (p.s mark as brainliest if )

It depends on the numbers, of people who were in the area. for you can not determine those who suffered minor injuries, without more information.