Smoking can affect the lungs and give you lung cancer. When someone smokes, they would inhale the smoke, causing the smoke from the cigarettes to go into your lungs.
Abstinence means to avoid or not want to do something. It is preferred that high school children under the age of 18 restrain from sexual activity. (Hope this helps if it did pls mark brainliest!)
Communication. When you communicate with someone you talk to each other. However if you are listening to someone's problems and helping them through something by sharing feelings this can also be caring, so it's up to interpretation.
Physical barrier to protect us from pathogens