Scientists have a special interest in smoke aerosols caused by fires because smoke contributes to the overall global air-pollution levels than can impact the quality of air that humans breathe.
(Scientists; have; a special interest in smoke aerosols; because smoke contributes to the overall global air-pollution levels than can impact the quality of air) (smoke aerosols; caused; by fires) (smoke; contributes; to the overall global air-pollution levels) (the quality of air; breathe; humans)
Scientists smoke aerosols smoke the quality of air
have caused contributes breathe
a special interest in smoke aerosols because smoke contributes to the overall global air-pollution levels than can impact the quality of air
by fires
to the overall global air-pollution levels
humans