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Carbon Cycle
Water Cycle
Nitrogen Cycle
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Biology
Carbon Cycle
Summary:
Carbon must be recycled from other living organisms, from carbon in the atmosphere, and from carbon in other parts of the biosphere.
Burning fossil fuels releases carbon dioxide into the atmosphere.
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Why is there more carbon dioxide in the air now than there was years before?
How do humans affect the balance of cellular respiration and photosynthesis?
What are some sources of carbon dioxide?
How much carbon is wrapped up in fossil fuels compared to the total amount of carbon?
What happens when shell-building organisms die? What happens if those organisms are buried deeply?
What role does the process of photosynthesis play in cycling materials and energy through ecosystems?
Why is carbon dioxide important even though there is so little of it in the atmosphere?
When is sugar converted to carbon dioxide in the carbon cycle?
What happens when carbon dioxide mixes with water, and what does it cause?
How are the pathways in the carbon cycle disturbed by carbon footprints?
Where does the mass of a plant come from?
How does carbon dioxide cause global warming?
Does pollution contribute to global warming?