A coral reef is built from the skeletons of tiny animals called corals. Corals live in clean, warm saltwater A_______________________. They look like plants, but they are actually animals that use their tentacles to catch and eat tiny sea creatures. Corals usually live together in large groups called colonies. Over thousands of years the skeletons of dead corals build up on top of one another B_______________________.
The beautiful colors we see in reefs are C_______________________. All kinds of animals live in coral reefs, including such creatures as sea slugs, giant blue clams, strawberry shrimp, lionfish, angelfish, star coral and sea fans. Coral reefs are home D_______________________. New species are being discovered in coral reefs all the time.
These beautiful and fragile reefs of coral exist in the waters of 109 countries around the world. The Great Barrier Reef in Australia is 1,240 miles long, E______________________. Sixty percent of coral reefs are in the Indian Ocean and Red Sea, twenty-five percent are in the Pacific Ocean, and fifteen percent are in the Caribbean Sea.
Pollution, fishing, shell collecting, diving and boating have damaged many reefs. We can all help protect the coral reefs by not polluting the water, by recycling and by being careful F______________________ if we have the chance to visit a beautiful living coral reef.
1. the largest in the world
2. to follow the rules
3. to thousands of species of marine plants and animals
4. to form a coral reef
5. to understand their structure
6. that allows sunlight to reach them
7. those of the living coral on top
Ответ: | A | B | C | D | E | F |
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