Billions of organisms inhabit the upper layers of the soil, where they break down dead organic matter, releasing the nutrients necessary for plant growth.
(Billions of organisms; inhabit; the upper layers of the soil) (they; break down; dead organic matter) (the soil, where they break down dead organic matter; releasing; the nutrients necessary for plant growth)
Billions of organisms they the soil, where they break down dead organic matter
inhabit break down releasing
the upper layers of the soil
dead organic matter
the nutrients necessary for plant growth