vaccines are weakened viruses or bacteria that prompt the body to develop antibodies to foght against disease
I believe it is C, good luck!!
There is a quizlet for that
Answer:
It's a bad thing becaise plastic takes a SUPER long time to biodegrade. I don't think anything will happen to the soil necessary, but if you leave it there some wildlife might get hurt eating it. Pick it up for recycling
Explanation: