Harmful bacteria will harm you. Helpful bacteria will help you.
it is helpful
hahahha
Wind is harmful because it can destroy a building and blow someone away at the right speed. On the other hand, it's helpful as it provides us with a source of energy.
yes they kill more harmless insects than harmful ones.
If you need help I recommend you type in the specific question you need help with
it can be helpful or harmful
sometimes they are helpful and harmful.
Sandpaper is both helpful and harmful.
they are helpful not harmful to plants
helpful
helpful
Depends on what part of "harmful" or "helpful" you are referring to.
Harmful bacteria will harm you. Helpful bacteria will help you.
Slash and burn does not sound helpful, it sounds harmful.
they are very harmful.
it is not harmful but it is helpful