Both. Whale blubber and oil can make useful objects. Whales are also vicious creatures. 40% of humans are killed by whales a year.
Blue whales are not at all harmful.
lion are useful and harmful
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
Helpful.
Ozone at ground level is harmful. It is useful in stratosphere as it protects us from harmful UV rays.
Beluga whales can not be harmful to humans. They are playful and very intellegent.
Beluga whales can not be harmful to humans. They are playful and very intellegent.
It is useful because we can breathe it.
useful for dieing (;