Impact 2 unit 2 reading

When do you feel ill?

• When your immune system's protecting you.

• When it's the weekend.

• When your immune system doesn't work.

What causes illness?

• bacteria

• viruses

• organisms

• cells

How many cells do bacteria have?

• trillion

• just one

• more than human cells

What percentage of bacteria is bad for us?

• 99 %

• 1 %

• 100,000

Bacteria are lager than viruses.

• True

• False

How can you not protect against viruses?

• Wash hands

• Cover your face when you sneeze

• By getting vaccination

• By touching many things

How fast does a sneeze send the viruses?

• 100 km/h

• a hundred miles per hour

• 160 mph