Does hemichordata has shells?

1. The shell interpits the command line for the user2. Porgram exicution the shell is responsible for excuting the command that we entermeaning it analyzes the command before it is exucted3. The...

armadillo shell is harder because a turtle shell is made with the same material as your finger nail.and a armadillo is made with a material of a rock.

What are you talking about? It is very difficult for me to help you if I don't know which or what you are talking about! Next time, please write properly!

she shell, what do u think, stop wasting my time!!!!!!!

A shell is the hard thing made out of calcium which snails carry