The body of a crocodile is covered with a tough layer called ______.

Q. Crocodiles have a tough layer called ____ to protect their bodies.

Q.

What is the tough outer layer of a seed called?

Q. Both the crown and root of a tooth is covered by a layer of a bony hard substance called:

Q. The heart is covered by a double layered membrane called ____.

Q. A crocodile had just eaten a lamb when a hawk saw the crocodile, attacked it and consumed it. The hawk is in ecological terms called as