An animal's outer shell protects internal organs and:
food and shelter epidermal Epidermis all matter soft tissues alveoli warmth layers of fat
A B C D E F G H
Bones provide an outer shell to protect our internal organs.
Soft tissues and internal organs need an outer shell for protection.
An animal's outer shell protects internal organs and: (A) food and shelter (B) epidermal (C) Epidermis (D) all matter (E) soft tissues (F) alveoli (G) warmth (H) layers of fat