Earth image from

Atmosphere 78% nitrogen

Clovers Near Tree image from

Rhizobia bacteria adds nitrogen to the clover

Mowing the Lawn image from

Cutting the clover adds the nitrogen to the soil

Eating an Apple image from

"Life is dependent on life... The only way to get the balance of the proper nutrients into our food is to have the balance of the right sets of organisms in the soil."

Elaine Ingham PhD in Microbiology