can we see if per centage oygen will totally reduce in Earth??
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I think the sun causes global warming. Futile Destiny • 5 years ago. If there's a lot of Air Pollution over the years, do you think that would ...
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Earth has a surprising new player in the climate game: oxygen. Even though oxygen is not a heat-trapping greenhouse gas, its concentration in our atmosphere can affect how much sunlight reaches the ground, and new models suggest that effect has altered climate in the past.
Oxygen currently makes up about 21 percent of the gases in the planet’s atmosphere, but that level hasn’t been steady over Earth’s history. For the first couple of billion years, there was little oxygen in the atmosphere. Then, about 2.5 billion years ago, oxygen started getting added to the atmosphere by photosynthetic cyanobacteria. “Oxygen is produced as a waste product of photosynthesis. It is consumed through respiration,” explains University of Michigan climate scientist Chris Poulsen, lead author of the study published today in Science.
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