I've been to Six Flags many times since I've lived in St. Louis for years and would probably give them a better review but if someone went on just this day without season passes, they would likely not return so with that visit alone I would have given them two stars.
Elephant toothpaste reaction. Elephant's toothpaste is a foamy substance caused by the rapid decomposition of hydrogen peroxide. This is often used for classroom demonstrations because it requires only a small number of ingredients and makes a volcano of foam.
1. Elephant IvoryUnlike human teeth, elephant tusks do not have an enamel coating. They do have a cementum layer, however; ivory dealers refer to this as the bark or the rind. Occasionally this layer is retained on a piece of worked ivory. One-third to one-half of an elephant tusk is hollow.Growth occurs as layer upon layer of calcified tissue is deposited on the interior of the tusk; you can see these concentric oval growth lines (called the Lines of Owen) in cross section.. Elephant IvoryUnlike human teeth, elephant tusks do not have an enamel coating. They do have a cementum layer, however; ivory dealers refer to this as the bark or the rind. Occasionally this layer is retained on a piece of worked ivory. One-third to one-half of an elephant tusk is hollow.