Horses are harmful to humans because they can bite, rear, buck, strike, kick at you. They are useful for Plowing, Farm work, races, leisure riding, companions and just for a pet. =]
Friesian horses are useful for riding and entering shows.
In what ways is antarctica be useful for humans
The use of horses are that weused to travel on them and now we do rodeos and horse races.
lion are useful and harmful
It is not harmful. Also it is not useful
Sun's rays are some useful and some harmful. UV rays are harmful. ozone protects us from it.
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
Both. Whale blubber and oil can make useful objects. Whales are also vicious creatures. 40% of humans are killed by whales a year.
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.