2. Every time you breathe…

3. Every time you breathe…
you take in this much Nitrogen…

4. But plants can’t use this kind of Nitrogen
Every time you breathe…
you take in this much Nitrogen…
and this much Oxygen…
But plants can’t use this kind of Nitrogen

5. First, lightning and some types of bacteria that live on plant roots create nitrogen compounds that plants can use.
The
Nitrogen
Cycle

9. Plants absorb nitrogen compounds through their roots, and use it to build cells.

10. First, lightning and some types of bacteria that live on plant roots create nitrogen compounds that plants can use.
The
Nitrogen
Cycle

11. Moo

12. Animals eat the plants.
Their waste puts Nitrogen back into the ground.
Which makes the plants grow stronger…

13. The Nitrogen Cycle Summary
First, lightning and some types of bacteria that live on plant roots create nitrogen compounds that plants can use.
The
Nitrogen
Cycle
Summary
Nitrogen is transferred between plants and animals repeatedly…endlessly.