Animals require oxygen directly for respiration, to convert fuels in their bodies into energy via a reaction which involves oxygen.
Plants and other lifeforms require oxygen indirectly as a component of many chemicals which make up their cellular structure and the compounds they use to create energy from.
Not all living things utilize oxygen. The archaeabacteria do not, for example. They live in environments that we humans would consider quite hostile, and utilize elements/compounds that one would not expect!
wikipedia.org/wiki/Archaea#Metabolism
Also:
www.astrobiology.com/extreme.html
Carbon is an element present in all living things.
Not all living things have lungs -- but all living things utilize energy in some fashion.
Considering that plants are also living things we all need oxygen, so all living things breath.
Oxygen
Animals take in oxygen and release carbon dioxide.
Yes, because cells are living things and all living things need oxygen to survive.
Oxygen is what plants produce that is important to all living things!
oxygen is 21% of the air. Nearly all living things depend on oxygen. In mammals it is found in the lungs and in the bloodstream.
Yes, all living things need oxygen.
All living things are made of cells, all living things ether need or produce oxygen, all living things reproduce, all living things make and use energy, and all living things adapt to their enviorment.
ALL living things (organic) must have carbon and oxygen to live.
Carbon,Oxygen,Nitrogen,Phosphorous and Potassium.