Many corals secrete an exoskeleton that builds up to become a coral reef, and to fisherfolk, coral reefs are homes to fish that are waiting to be caught. Given these facts, what do exoskeletons secreted by corals do among the following options:
- Give homes to humans
 - Give homes to penguins
 - competing for resources
 - Give homes to fish
 - reproduce
 - Give homes to birds
 - preventing heat transfer
 - protect them


 

    Give homes to fish     