Answer:
sex is the insertion of an erected penis into the vagina of a female. it's important cos if u don't have sex, u cannot give birth
Answer:
The smallest bronchioles end in tiny air sacs, called alveoli. They inflate when a person inhales and deflate when a person exhales. During gas exchange oxygen moves from the lungs to the bloodstream.
Explanation:
Being a living example of a tobacco-free lifestyle can: all of the above.
All of the listed options is an example of a tobacco-free lifestyle. It could certainly prevent others from trying to smoke, convince others to stop smoking, and make others around you more healthy.
Virus culturing because it allows you to take the virus and control it so can put it into a vaccine
