Vertebrates Review

7. animal without a backbone
8. birds' skeletal systems are different because they have _____________________
10. amphibians have smooth, ________ skin
11. birds are covered in _____________
14. birds and reptiles both have a _________ in their digestive system
15. examples include hawks, vultures, robins, and pigeons

1. birds and mammals are _________, or warm-blooded
2. mammals are covered in ______ or fur
3. animal with a backbone
4. vertebrate that has live birth
5. mammals, birds, amphibians, and _________ all use lungs at some point in their life cycle
6. fish do gas exchange with ____________
9. fish and _________ lay jelly-like eggs
12. amphibians, reptiles, and fish are __________, or cold-blooded
13. reptiles lay leathery ______