SCIENCE
ENVIRONMENTAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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volcanic activity that is common in tropical marine environments
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the gradual accumulation and fusion of skeletons of bony fish
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the secretion of calcium carbonate by tiny marine mammals
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minerals that are washed from land ecosystems and build up.
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Detailed explanation-1: -A coral reef is made of thin layers of calcium carbonate Massive reef structures are formed when each individual stony coral organism-or polyp-secretes a skeleton of calcium carbonate.
Detailed explanation-2: -The type of rock that the coral skeletons build is called limestone. Limestone has been forming in Earth’s oceans for more than 400 million years. Limestone deposits that began as coral reefs provide evidence of how Earth’s surface and environment has changed.
Detailed explanation-3: -Coral reefs are massive structures made of limestone deposited by coral polyps. Often referred to as the “rainforests of the sea, ” coral reefs support approximately 25 percent of all known marine species.
Detailed explanation-4: -Coral reefs are intricately interconnected systems, and it is the interplay between species that enables their healthy functioning.