If something formed from skeletons provide food and shelter to many ocean organisms, then what provides food and shelter to many ocean organisms?

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

 

  Something formed from skeleton        