Breath it to stay alive, and use it with burning to get energy from fuels. That's what oxygen is used for.
if we use it in a useful way it is boon. but if we use it in useless way it is a bain
It's just another way of saying "be useful". When you are in the woods a map and compass would be of use. They would be useful.
They're useful in the same way that ever other unit is useful; if you use them in the right situation. You should ask instead 'How can I use Deff Dredds to their greatest effect?'
the way to use pi is to find the circuference of a circle
Air is very important to human survival because it contains oxygen, which humans need to live.
depends on the way and purpose u use it for... it certainly is a useful technology...
Some fishes needs Sea Water to survive, that can be one possible way that it is useful.
Some fishes needs Sea Water to survive, that can be one possible way that it is useful.
this is way to general.... basically to live and for everything.
No, not all members of the domain Archaea require an oxygen-free environment for survival. While some Archaea are obligate anaerobes that cannot survive in the presence of oxygen, others are facultative anaerobes that can switch between anaerobic and aerobic metabolism depending on oxygen availability.
any animal that is on land at some point in its life obtain oxygen the same exact way we do. the only animal that obtains oxygen in a different way is the fish and it obtains its oxygen by filtering the water it swims through between its gills.
Flowers do not use oxygen in the same way animals do for respiration. Instead, flowers use oxygen produced during photosynthesis to break down molecules for energy and growth. The oxygen produced during photosynthesis is often released back into the atmosphere.