Some bacteria can fight other harmful bacteria’s and some bacteria’s are harmful to the body.
There are obviously A LOT of them. Like how your brain is slowly deteriorating, which is scary and dangerous. I can't cover everything but I have a website link you could visit that talks about this subject
https://www.drugabuse.gov/publications/research-reports/heroin/what-are-long-term-effects-heroin-use
Answer:
(c)
Explanation:
because it makes you hardworking