You are presented with the question "What provides food and shelter to many ocean organisms?" and the following answer choices: 
- 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

Now knowing that coral reefs provide food and shelter to many ocean organisms and coral reefs are formed from coral skeletons, choose the best answer.


 

  Something formed from skeleton       