no
they eat cocroches and other bugs
All Microbes are not harmful. All virus are harmful. Some bacteria are harmful
some are harmful but some are not harmful
No they are not harmful.
more harmful, most harmful
lion are useful and harmful
If you need help I recommend you type in the specific question you need help with
It is not harmful to animals but it can be harmful/fatal to children
it is very harmful or harmful depending on your body
Harmful is an adjective.
No psi balls are not harmful. Shadow balls can be harmful.