Coral reefs are formed from coral polyps. When the polyps release calcium, a free swimming coral larvae is formed and which attack themselves to attached rocks.
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Vitamin A deficiency is the leading cause of preventable blindness in children.
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The word photosynthesis contains clues to its meaning: the prefix photo comes from a Greek word meaning “light.” The root synthesis comes from another Greek word meaning “to put together.” Through photosynthesis, plants use the energy of light to put a meal together using water and carbon dioxide.
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