2.Choose the correct words from the text to complete the sentences.
1. The conditions and water temperature are ideal for colonies of _______ coral polyps.
2. Corals are among the most beautiful of _________ organisms.
3. They develop the colours and complex structures for which the reef is ______.
4. While the size, shape and colour of coral formations_____ _____ ,they are all the work of one type of ______ .
5. Low islands are the coral _____formed by_____ of sand and coral parts.
6. Continental islands are _____ by the changes in the sea level.
7. The Marine Park Authority limits human activity on the reef and _____ areas for a specific range of activities.​