Technically, no. They're closely related to alligators, but aren't actually alligators. Gharials (and alligators, and crododiles) are all crocodilians.
no. a hippopotamus is a semi aquatic mammal.
Reptiles have scales and Amphibians do not.
Amphibians do not have scales; reptiles do.
No. Birds and reptiles are separate from amphibians.
amphibians
amphibians
No. Reptiles and amphibians are two different orders and animals and amphibians cam first. Simply put, the first amphibians evolved from fish and the first reptiles evolved from amphibians.
Herpetology is the study of the role of amphibians and reptiles.
Snakes are "Reptiles" not to be confused with "Amphibians"
Fish, and then amphibians, and then reptiles, and then mammals
No. Amphibians and reptiles are vertebrates and thus have an endoskeleton like we do.
Reptiles