vertebrates

Hey we're finally done with invertebrates. Now we're starting vertebrates. Vertebrates are a animal with a backbone. A backbone will help them run,stand, and not fall on your butt. All vertebrates have cartilage in parts of the skeleton in their bodies. Cartilage is like a cover for the ends of most bones. Are next part is fish. There are three different groups or types of fish as one would say. There are jawless fish,  cartilage fish, and bony fish. Different types live in different waters. But fish have on thing in common. Their all coldblooded. This what a coldblooded animal is. It's a animal that's blood temperature varies on the environment.


   gotta go.