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Question
Which of the following is responsible for atmospheric fixation of nitrogen?
Which of the following is responsible for atmospheric fixation of nitrogen?
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Solution
The correct option is C Lightning
Nitrogen is present in the Earth's atmosphere but plants cannot absorb it directly.
The enormous energy of lightning breaks nitrogen molecules and enables their atoms to combine with oxygen in the air forming nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth. This form of nitrogen can now be utilised by plants.
Nitrogen is present in the Earth's atmosphere but plants cannot absorb it directly.
The enormous energy of lightning breaks nitrogen molecules and enables their atoms to combine with oxygen in the air forming nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth. This form of nitrogen can now be utilised by plants.
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