Living things need air, food and water because they are essential to the chemical processes that provide organisms with energy and keep them alive.
(they; are; essential to the chemical processes) (the chemical processes; provide; organisms) (the chemical processes; keep; them; alive) (Living things; need; air, food and water; because they are essential to the chemical processes)
they the chemical processes the chemical processes Living things
are provide keep need
essential to the chemical processes
organisms
them alive
air, food and water because they are essential to the chemical processes