Respuesta :

[tex]{\huge \underline{{ \fbox \color{red}{A}}{\fbox \color{green}{n}}{\fbox \color{purple}{s}}{\fbox \color{brown}{w}}{\fbox \color{yellow}{e}}{\fbox \color{gray}{r } }}}[/tex]

They are further classified into: fish, amphibians, birds, reptiles and mammals.

I hope I've helped : )

The bones that structure the backs of people and other animals