The Ear

Level B1

The ear takes in sounds, then sends this information to the brain. Ears also help you keep your balance so that you don’t fall over.

The Central Nervous System

Level B1

The adult brain weighs about three pounds. This doesn’t seem like much, but it is one of the most important organs in the human body.

The Circulatory System

Level B1

The circulatory system is an extremely important part of your body. This system transports blood throughout your body.

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