Nitrogen, nitrogen, in the air you are.
You're so important, for plants and animals, by far.
You're made into proteins, and nucleic acids, too,
And without you, life would end, that's true.
Nitrogen-fixing bacteria, they help convert you
Into a form that plants can use, that's what they do.
Nitrifying bacteria, they turn you into nitrates,
Which plants can easily absorb and use, it's great!
Denitrifying bacteria, turn you back to nitrogen gas
And into the atmosphere, you go, like a breeze on the grass
Nitrogen cycle, nitrogen cycle,
You keep on recycling, and that's so vital!
Nitrogen cycle, nitrogen cycle,
You're the key to life, and that's just so logical.
You're in the soil, the air, and the water too,
You're everywhere we look, and that's really true!
Nitrogen, nitrogen, you're so important to life,
And without you, we'd all be gone, that's right!