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Both of the outer coverings are made out of atoms.
They use outer coverings to protect themselves from injuries, cold temperatures etc.
hair
Muscles attached to the outer coverings in someinvertebrates contract and relax to helpthe animals move.
different outer coverings: animal hide for one and bark or fauna for the other
Yes, they have scales.
To make them feel confident.
It has a baby
Yes! All invertebrates have hard outer body coverings to keep them in shape. But birds don't have hard outer body coverings. So they are vertebrates!
yeah if they have skin they have to have a outer covering or they will die from getting sick
Eagle, Sparrow and Kingfisher.(all birds)
epithelial