0
by giving us oxygen for breathing.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Why is a catalytic converter usefull?
Reduces harmful emissions in our air.
How are Cadbury chocolates usefull to us?
They taste good
How is silicon usefull to us?
Made into computer chips.
Are people usefull?
We are together we help one another. We are all friends, we can live happy, no stress comes to us. So we are usefull
Why is oil usefull for us?
it powers stuff like cars
Why stars is usefull to us?
I'll answer it if you answer "why is school usefull for us" JK umm well they teach us about space. Also they all make the gravitational pull perfect it they move it would be werid i think sorry if not a good answer :)
Is cutting of trees are also usefull for us?
i think its a need of poor people
How is friction usefull for us?
It holds things in place - try taking a walk on ice.
Is this site usefull?
yes this site is usefull :)
How is oceangraphy usefull to the world?
it lets us see the study of aquatic animals in the fullest nipple
Why is the periodic table usefull?
It tells us al the elements that make up everything in the world.
How are acids usefull?
It helps us to preserve food and it also is used in your stomik (digestive system):)
