Multicellular life forms are capable of great structural diversity because they can specialize in ways unavailable to single-celled organisms.
(Multicellular life forms; are; capable of great structural diversity; because they can specialize in ways unavailable to single-celled organisms) (they; can specialize; in ways unavailable to single-celled organisms)
Multicellular life forms they
are can specialize
capable of great structural diversity because they can specialize in ways unavailable to single-celled organisms
in ways unavailable to single-celled organisms