Multiple choice

In the nitrogen cycle nitrogen in the air is separated by

  1. rain

  2. magic

  3. lightning

  4. animals
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Atmospheric nitrogen is chemically inert and cannot be used by most organisms. Lightning provides the high energy required to break the triple bonds of nitrogen gas, allowing it to react with oxygen and form compounds that reach the soil.

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