The comparison you've provided lists various gases released by fertilizers and landfills. Below is a clarification and comparison of the gases typically associated with fertilizers and landfills:
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Fertilizers:
- Fertilizers can release nitrous oxide (N2O), a potent greenhouse gas, especially when nitrogen-rich fertilizers are used.
- Some fertilizers can also lead to the release of carbon dioxide (CO2) through soil respiration processes or when certain organic fertilizers decompose.
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Landfills:
- Landfills primarily release methane (CH4) due to anaerobic decomposition of organic waste. Methane is a much more potent greenhouse gas than carbon dioxide in the short term.
- Landfills also produce carbon dioxide, but the primary focus is often on methane emissions.
Based on this understanding, the correct comparison can be summarized as:
- Chemicals from fertilizers can release nitrous oxide, while landfills release methane.
This is a key point in understanding the impact of both fertilizers and landfills on greenhouse gas emissions.