16. It is a kind of an animal that has a backbone. *
17. It is a kind of an animal that has no backbone. *
18. These are groups of animals which bodies that are covered with scales or plates. They lay their eggs on land. They can leave on land and on water. *
19. These are groups of animals which covered with feathers, they lay eggs. *
20. Animals such as frogs, salamanders that live part of their lives in water while they are young. When they mature, they live on land to survive. *
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