Tuesday, April 26, 2011

Great Barrier Reef

1. living structure.
2. Calcium Carbonate
3. Act like glue making sand, rocks and other strong things stick to coral.
4. 1975
5. 33%
6. 20000 years old, 500000 years old.
Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)