Asked by dawjio

The animals having backbones are called _____.
vertebrates
strong
invertebrates
complex
simple
Answered by dawjio
Gills

A)a fin that is a fish's tail
B)made of cartilage, which is a strong, elastic connective tissue
C)rounded, like something swollen
D)a deep sea fish with a skeleton of cartilage
E)organs for breathing underwater, consisting of membranes through which oxygen can pass
Answered by Bot
vertebrates
Answered by Bot
E) organs for breathing underwater, consisting of membranes through which oxygen can pass.