Spreads gases out making them less concentrated and harmful.
4 of 16
What are the 4 stages in the history of the atmosphere?
1. Temp above 100 degrees-volcanoes release O2 and H20. 2. Rains for 1st time=oceans created. 3. Bacteria in oceans photosythnesise and release 02 into atmosphere. 4. Now-lots of 02 and carbon is locked up in fossils
5 of 16
How do we measure change in the atmosphere?
1. Iron Pyrate - only if no 02 2. Iron oxide rock - only if no O2 3. Ancient Soils 4. Air bubbles trapped in ice cores
6 of 16
Name 6 pollutants and there effects, how they are made and chemical formula
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