Multiple choice

When does nitrogen gets converted to its oxides?

  1. lightening

  2. transpiration

  3. decomposition

  4. photosynthesis

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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.