Jawaban:

1. Polyps is a small individual animals that form a Coral.
2. Polyps have a mouth, stomach, and tentacles to catch food and to get their food it depends oj where they live. Polyps can live in warm and in cold. In warm, sunlit zones, they eat small plants called algae. In cold, dark zones, they must find a place to live with strong current of moving water and they ise their tentacles to catch plankton.
3. Colonies is the most corals together in huge groups.
4. Since in the sentence before, it is written that 'Coral reefs are a sourve of food for many communities.' So, they refers to coral reefs.
5. Due to the pollution, many coral reefs will disappear, so it makes the coral reefs are in danger.

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