A strong, flexible tissue that can form a skeleton or connects parts of the skeleton is called _________. Sharks have this.

A ________ is an animal that has a hard outer shell and that usually lives in water.

True or False: An endo skeleton is found inside the skin, while an exoskeleton is a hard, outer covering.

When an animal is no longer in existence, this means the animal is ______________.

True or False: A joint is any place where two bones come together.

Which of the following types of animals have warm blood, a spine, fur or hair, and produce milk for their babies?

When a tadpole changes into a frog, it goes through a _______________.

This part of the body protects the brain.

This part of the body is the backbone.

This part of the body is a long bone in the chest that connects to the ribs and bones in the shoulders. It's also called the breastbone.

These are the small bones that make up the spine.