They are not very harmful, but if they are respected with care then they with become useful by teaching kids responsibility and creating an open soul to those with animals in mind.
Cows are helpful by producing milk but are harmful by the amount of methane they create.
1. You will let train them regularly.
lion are useful and harmful
Bromine, or Theo Bromine, is incredibly harmful to dogs. In fact, it is the reason why dogs cannot eat chocolate. Dogs who ingest bromine can possibly die or, at the very least, become very sick.
It is not harmful. Also it is not useful
The changes talking place in our surroundings and which are useful to us are called Useful changes. The changes which are not useful but harmful are called Harmful changes
useful
i think its both harmful and useful
it is useful
Ozone at ground level is harmful. It is useful in stratosphere as it protects us from harmful UV rays.
Is boric acid harmful to dogs
is snake repellent harmful to dogs