Viruses because children immune system cannot repeal parasites (no one can) or bacteria that is why we wash or hands. Fungi is not something we can repeal either.
For a government to prevent/ stop/ lessen the
prevalence of corruption, they could do some ways: (1) transparency of all the
officials hired by the position. The people needs to see that the person they
are voting is honest and with integrity.
Tobacco, because alcohol can't cause mouth cancer it's not harming your mouth it's harming your brain cells