Like birds, most insects, fish, amphibians and reptiles lay eggs outside the mother's body, and have outer shells made of different materials.
(most insects, fish, amphibians and reptiles; lay; eggs; outside the mother's body) (most insects, fish, amphibians and reptiles; have; outer shells made of different materials) (outer shells; made; of different materials)
most insects, fish, amphibians and reptiles most insects, fish, amphibians and reptiles outer shells
lay have made
eggs outside the mother's body
outer shells made of different materials
of different materials