Where does oxygen come from?

Answer

Oxygen comes from many places, including air, water, rocks, plants, living organisms and even the atmosphere. Oxygen is produced in abundance by trees, plants and living organisms, including humans. It originates from the ground, the water and even the ozone layer of the atmosphere.

Unlike humans, trees inhale carbon dioxide and exhale oxygen, releasing vast quantities into the air in the process. Oxygen that forms in the air does so in the ozone layer, which also protects the Earth from destructive ultraviolet rays. Oxygen is produced high in the air as well as by algae, bacteria and many terrestrial and aquatic plants, which generate oxygen during photosynthesis.

Q&A Related to "Where does oxygen come from?"
Oxygen is basic element which was created at the birth of Earth. We don't have any known place of it's origin. It is believed it came from Big Bang.
http://www.ask.com/web-answers/Science/Other/where...
The sun's rays are the first step in the process of photosynthesis. Sunlight hits the plant and parts of the plant's cells called chloroplasts absorb the light's energy. When water
http://www.ehow.com/facts_7426595_oxygen-liberated...
Oxygen is obviously produced through photosynthesis in green plants. But. what about areas like the Sahara Desert, the middle of the ocean, or Antarctica which don't have any green
http://wiki.answers.com/Q/Where_does_oxygen_come_f...
Did you know that lead is a natural element that is found in the earth's natural environment and it is used in a lot of man-made products. You can find more information here:
http://www.ask.com/web-answers/Science/Chemistry/w...
1 Additional Answer
Ask.com Answer for: where does oxygen come from
Explore this Topic
Green plants produce the oxygen that humans and other animals require for life. Plants produce this oxygen via photosynthesis. Photosynthesis is the process by ...
Compressed oxygen comes in various cylinder sizes. The sizes are then labeled with letters to allow the medical supply store the ability to differentiate between ...
Tadpoles come from newly hatched frog and toad eggs. New tadpoles have no arms or legs, and most cannot breathe atmospheric oxygen. They also have long tails. ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com