i think harmful
If you need help I recommend you type in the specific question you need help with
No, it isn't.
it can be helpful or harmful
sometimes they are helpful and harmful.
Baking soda can be helpful in the bath to reducing the itch from chickenpox. Baking powder is not normally used.
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.