But even this is only a drop compared with the amount that is used by plants and then returned to the air again by the animals and bacteria that eat the plants, decompose them, and release their elements.
(the animals and bacteria; release; their elements) (the amount; is used; by plants) (the amount; returned; to the air; T:again; T:then) (the animals and bacteria; eat; the plants) (the animals and bacteria; decompose; them)
the animals and bacteria the amount the amount the animals and bacteria the animals and bacteria
release is used returned eat decompose
their elements
by plants
to the air T:again T:then
the plants
them