Fact 1: Coral reefs provide food and shelter to many ocean organisms.

Fact 2: Coral reefs are formed from coral skeletons.

Given the two facts above, answer the question "What provides food and shelter to many ocean organisms?" with the following options: 
- It helps them survive
 - Something formed from skeleton
 - sedimentary rocks
 - important habitats
 - Something with a head, thorax, and abdomen
 - it protects them
 - gastropod shells
 - in their habitats


 

  Something formed from skeleton       