Question

Which compares the gases released by fertilizers and gases from landfills? Chemicals from fertilizers can release carbon dioxide, while landfills release methane.
Chemicals from fertilizers can release carbon dioxide, while landfills release methane.

Chemicals from fertilizers can release methane, while landfills release nitrous oxide.
Chemicals from fertilizers can release methane, while landfills release nitrous oxide.

Chemicals from fertilizers can release methane, while landfills release carbon dioxide.
Chemicals from fertilizers can release methane, while landfills release carbon dioxide.

Chemicals from fertilizers can release nitrous oxide, while landfills release methane.

Answer 1

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:

1. **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.

2. **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.