Which is a true statement about vaccines?

a.
vaccines can protect against the spread of specific diseases.

b.
vaccines cause the nervous system to destroy specific germs.

c.
vaccines usually increase the spread of specific diseases.

d.
all of the above

Which of these is the best ways to avoid problems with gangs? select all correct answer. a. dress like a gang member but dont join a gang b. inform your parents or police if gang members try to recruit you c. go to places gang member frequent d. become friends with someone who is a gang memeber

Achemical substance that people of any age may not lawfully manufacture, possess, buy, or sell is known as a(n) a. over the counter drug b. prescription drug c. medicine d. illegal drug

3reasons on how do friendship affect a teenager?