Answer:
Three ways you can be safe when using social media and the internet is to make your account private, don't share personal information, and don't talk to strangers. You should make your account private because it allows you to see who wants to follow you and it allows you to allow whether or not they are allowed to follow you. You shouldn't share personal information because someone can possibly track you down, or your house, or your school, etc. Talking to strangers applies to everywhere including online. You won't know how they'll respond and that can make you uncomfortable.
Physical factors ........
Answer:
1. I think immune system but not entirely sure
2. Allergen :))
Explanation:
I know its allergen because I get really bad allergies so it sounds familiar to my life lol
Answer:
Iron.
Explanation:
Iron is found in red blood cells, where it carries oxygen to the rest the body. Also, iron is found in many meats, dark green vegetables, and whole grains.
