Decide if the following statements are true or false based on the video that you watched. 

1. It was easy for 19th-centuryAmericans to stay clean.

3. Germ theory was quickly accepted by the general public.

2. Infectious diseases started to increase in number because of germs.

4. Advertisers used germ theory to sell new products.

5. Science showed that germs could be passed from person to person.

Choose the correct word to complete the sentence with. 

1. The___________ looked very calm before performing the operation.

2. The venom of the snake is________________, quickly killing its prey.

3. Scientists studied the____________ under a microscope.

4. They used an ____________ to clean the wound.

How can you improve your personal hygiene and stay clean?