A. Because vertibrates is an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
B. Because invertebratea is an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. The invertebrates constitute an artificial division of the animal kingdom, comprising 95 percent of animal species and about 30 different phyla.
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1. B.Snake
2.C. Shark
3. D. Bat
4. C. Giraffe
5. D. Ostrich
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6. A. Mammals
7. C. Birds
8. C. Reptiles
9. A. Fishes
10.D. Reptile
11. B. Arthropods
12. A. Exoskeleton
13. B. Scorpion
14. A. Beetles
15. C. Insects
16. A. Nematoda
17. B. Molluska
18. D. They both have one body opening
19. D. Snail
20. C. They take nutrients from the bodies or other organism.
I hope this is helpful
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