1. Where is the Great Barrier Reef located?
     a) California
     b) Pakistan
     c) Australia

2. How many years ago was it formed?
     a) 99 million years ago
     b) 17 million years ago
     c) 10 million years ago

3.Approximately how many types of plants are in the reef?
     a)  5
     b) 90
     c)  5000

4.Approximately how many types of creatures are in the reef?
     a)  28
     b)  30
     c)  27

5. What is the most common sea turtle?
     a) leatherback
     b) loggerhead
     c) green turtle