Infectious diseases are transmitted from person to person by direct or indirect contact. Old people, pregnant people, and infants can get sick easier. Certain types of viruses, bacteria, parasites, and fungi can all cause infectious disease
5. The person may say mean things to you through text messaging. That's cyberbullying. Or they can walk up to your house and hurt you physically or mentally.
6. I would advise Lin to tell a trusted adult ASAP and wait for instructions on how to handle it or tell them no and carry on with your day. Whichever makes you feel safest.
7. If you use the methods given, you can keep yourself safe online and at home.
Hope this helps!
Answer:
True
Explanation:
Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
True is the answer to your question I believe
