Why Do We Need Oxygen?

Answer

We need oxygen because the main use of oxygen in humans and aerobic organisms is to permit the body to build energy. Energy is required as a host of processes in the body like movement, growth, repair, nerve conduction. Energy can be added from carbohydrates fats as well as amino acids but they need to be oxidised.
Q&A Related to "Why Do We Need Oxygen"
Cells need oxygen to do a process called respiration.diffusion,and osmosis.
http://wiki.answers.com/Q/Why_do_cells_need_oxygen
As the California Energy Commission explains, increasing alternative fuel use can provide more options for consumers. These energy options can act as competition for more popular
http://www.ehow.com/info_8077951_do-need-alternate...
Oxygen is needed by the body to perform its functions like the following: create energy. digest food in the bosy. clean toxins out of the bosy. fuel the body's muscles. metabolize
http://answers.yahoo.com/question/index?qid=200710...
The term 'aerobic' means "air needing". Anaerobic organisms do not need oxygen. As to why they need oxygen, aerobic organisms utilize sugars and other carbohydrates by breaking
http://wiki.answers.com/Q/Do+aerobes+need+oxygen
2 Additional Answers
We human beings and living creatures need oxygen for survival. It is vital to our ability to breathe. It is vital to all creatures on this planet.
We need oxygen to live. In other words our bodies need oxygen to carry on the processes that enable us to do what we do everyday. The red blood cells carry oxygen to all parts of our bodies. Without this oxygen our bodies could not metabolize food and do other important functions.
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