B.Write TRUE if the statement is correct and FALSE If not. 11. Vertebrates that can fly, crawl, swim, run or walk 12. The vertebrates have no skeleton which are found inside their body. 13. They are called birds because they give birth to live young 14. Female mammals feed their young with milk which comes from their mammary gland 15. Birds are vertebrate animals that have feathers to cover their bodies and wings for flying although not all birds fly like the ostrich. 16. Birds are animals that are cold-blooded. 17. Reptiles breathe through their lungs and move by crawling 18. Amphibians are animals that can live both in water and on land. 19. Amphibians are vertebrates that live in water hence, they are called aquatic animals. 20. Fish are warm-blooded vertebrates.