The nitrogen gas can be fixed spontaneously by?
- Industrial fixation
- Biological fixation
- Atmospheric fixation
- All of the above
Explanation
Nitrogen fixation refers to the process of converting atmospheric nitrogen (N2) into a usable form for plants.
This can happen through several methods:
Atmospheric fixation:
- This occurs naturally when lightning strikes, breaking the strong nitrogen-nitrogen triple bond and creating nitrogen oxides that can dissolve in rainwater.
Industrial fixation:
- This involves using high-temperature and pressure processes, like the Haber-Bosch process, to convert nitrogen into ammonia.
- This method is crucial for industrial agriculture.
Biological fixation:
- This process is carried out by certain bacteria, such as those found in the root nodules of legumes (like peas and beans), or free-living bacteria in the soil.
- These bacteria can break down the nitrogen molecule and convert it into ammonia or other usable nitrogen compounds.
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