Respuesta :
Answer AND Explanation:
gills in adults -insects, mollusks, crustaceans, amphibians, fishes
scales- amphibians, fishes, reptiles, aves
amniotic eggs - reptiles, birds, mammals
spinal cord - vertebrates
ectothermic - fishes, amphibians, reptiles, and invertebrates
external fertilization - amphibians and fishes, some invertebrates such as coral and sea anemones
lungs in adults -birds, reptiles, mammals, fishes and amphibians
metamorphosis- amphibians, fishes, insects
Answer:
- Gills in adults - fishes
- Scales - amphibians, fishes, reptiles
- Amniotic eggs - reptiles, birds
- Spinal cord - vertebrates
- Ectothermic - amphibians, reptiles
- External fertilization - amphibians and fishes, some invertebrates such as coral and sea anemones
- Lungs in adults - birds, reptiles, mammals, fishes and amphibians
- Metamorphosis - amphibians, insects