Eyelashes help protect your eyes Each of your eyes has about 200 eye lashes An eye B C B C Your Sense of Hearing 4 How Hearing Works 7 Types of Sound 14 Animals and Hearing 16 Hearing and Safety 18 Glossary 22 To Learn More 23 Index 24
4 What’s that sound All day long you use your sense of hearing to learn about your surroundings
You listen carefully to your teacher You hear a dog bark Noisy cars zoom down the street You hear your favorite song on the radio 5
