Most amphibians produce eggs which require water for the development of the aquatic larvae, while the reptiles were the first animals to lay an egg which could develop on land - an EGG with a shell.
(Most amphibians; produce; eggs which require water for the development of the aquatic larvae) (eggs; require; water for the development of the aquatic larvae) (the reptiles; were; the first animals to lay an egg which could develop on land - an EGG with a shell) (the first animals; to lay; an egg which could develop on land) (an egg; could develop; L:on land)
Most amphibians eggs the reptiles the first animals an egg
produce require were to lay could develop
eggs which require water for the development of the aquatic larvae
water for the development of the aquatic larvae
the first animals to lay an egg which could develop on land - an EGG with a shell
an egg which could develop on land
L:on land