Question

Why is oxygen Important to living organisms

Answer 1

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Oxygen is important because it's needed in the energy metabolism (cellular respiration), the immune system and a lot of other things.

Answer 2

What are those "a lot of other things" ?? Huh, @thomaster

Answer 3

Welcome to OpenStudy @Drcarrol! @thomaster is right.


Refer to the following links for more info:
http://books.google.mu/books?id=ziVk6CI82WgC&pg=PA16&lpg=PA16&dq=importance+of+oxygen+to+living+organisms&source=bl&ots=S2uPAl1ma6&sig=QZlz8RoeDhuD5fWS87tjBzjzBJA&hl=en&sa=X&ei=q4EEUqqQF8KSrgfKkoGgBg&ved=0CC4Q6AEwATgK#v=onepage&q=importance%20of%20oxygen%20to%20living%20organisms&f=false

http://dramarnathgiri.blogspot.com/2012/04/importance-of-oxygen-in-life.html

http://www.ch.ic.ac.uk/rzepa/mim/environmental/html/oxygen_text.htm

Answer 4

@thomaster ...yes he is right as oxygen helps us release of energy within our cells i.e intra-cellular respiration