Answer: Coral reefs are important to the ecosystem because they are the pillars on which marine and coastal ecosystems are built. They keep plants, fish, and animals fed. They clean up our water and protect our coasts.
Explanation: Hope it helps :)
Is this problem multiple choice? I remember much of biology but I'm blanking on vocab
Answer:
If I understand the answer should be sand
Write Like how it feels,What's around me,What were the other creatures?When you were born etc