The first group of insects with three stages in the life cycle has incomplete metamorphosis, while the group with four stages in the life cycle has complete metamorphosis.
(The first group of insects with three stages in the life cycle; has; incomplete metamorphosis) (the group with four stages in the life cycle; has; complete metamorphosis)
The first group of insects with three stages in the life cycle the group with four stages in the life cycle
has has
incomplete metamorphosis
complete metamorphosis