WONDER #1073: How Great Is the Great Barrier Reef?

Question 1 of 3

Where is the Great Barrier Reef located?

1. Antarctica
2. Australia
3. Great Britian
4. Japan

Question 2 of 3

The Great Barrier Reef is made up of and built by billions and billions of tiny organisms called what?

1. coral shells
2. coral polyps
3. creature polyps
4. rock barrier

Question 3 of 3

Which of the following is NOT a factor that threatens the health of the Great Barrier Reef?

1. salt water
2. pollution
3. rising sea temperatures
4. the fishing industry

Check your answers online at https://www.wonderopolis.org/wonder/How-Great-Is-the-Great-Barrier-Reef.