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Coral Reefs 3
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Coral reefs are one of the oldest types of living systems on earth, and certainly one of the most spectacular. They are massive underwater structures formed by the limestone skeletons of tiny invertebrate animals. Reefs house a greater diversity of body forms, chemistry, and animal phyla (thirty-tw ....
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.... polyp. In turn the polyp filters particles out of the water and excretes waste (nitrogen and phosphorus) that becomes available to the symbiotic algae. It's this very tight nutrient recycling within the coral itself that allows these corals to live in very low-nutrient waters.
There are three kinds of reefs: atolls, barrier reefs, and fringing reefs. Atolls are formed out in the middle of the ocean by volcanic subsidence, while fringing and barrier reefs form near continents. Florida contains b.... |
| Number of words: 3393 |
Approximate pages: 13 |
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