invertebrates and vertebrates

Match it! Select the correct answer from the pull down...Good luck!

Invertebrates have no

Fish, Amphibians, and reptiles are all

Which is an amphibian?

There are ______ classes of vertebrates

The union of an egg and sperm is called

Which animal has a 2 chambered heart?

Most fish and other animals that lay their eggs in water have

Both birds and mammals are