But when we use or dispose of them improperly, they can have harmful effects on humans, plants, and animals.
(we; use; ) (we; dispose improperly; of them) (they; can have; harmful effects on humans, plants, and animals; T:when we use or dispose of them improperly)
we we they
use dispose improperly can have
of them
harmful effects on humans, plants, and animals T:when we use or dispose of them improperly