This is a living coral reef with its many reef-dwellers, including fish, snails, crabs, and sponges.

Based upon what has happened in the past, what do you think would most likely happen to these organisms if the coral reefs went extinct?

a) They would find a new habitat in which to live.
b) They would go extinct.
c) They would evolve into different organisms.

Most organisms are suited to a particular habitat and cannot easily change to another one. Try again...

Paleontologists found evidence that when the organisms that built ancient reefs went extinct, many other organisms died out as well. Chances are the same thing would happen today.

Evolution takes time. If there is a major change in the habitat, organisms are either able to survive, or they are likely to go extinct. Try again...