All Carbon
Where did all that carbon dioxide go that was there billions of years ago?
We had to draw up a table in Science of what gases are in the air at the current time and 3000000000 years ago I think it was :S
Anyway, we wrote percentages and 3000000000 years ago in the air, there were 100% of carbon dioxide on the Earth. Now there is only 0.14%..
Our Science teacher in my opinion isn't a very good one. I wanted to know why did it fall so significantly? Where did all that carbon dioxide go?
Can any of you help me out :S ??
I do not think your assessment of 100% CO2 in the atmosphere is totally correct, there were also gasses from the volcanic activity but in answer to you question:
Plants absorbed the carbon dioxide and, using photosynthesis (light from the sun), converted the CO2 into carbon + oxygen. The plants stored the carbon in their structure and expelled oxygen into the atmosphere.
This took place over millions of years and when the plants died their carbon content was fossilized to produce coal.
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