What are Coral Reefs

What are Coral Reefs


Corals are coelenterates living in limy skeletal cup which is secreted by the epidermis. After the death of organism, their skeleton, which is made up of calcium carbonate deposited at the bottom of seas. After thousands of years, they form rock like deposits known as coral reef. Sometime it causes accidents in sea.


Note: As a rule, a student in major with pockets full of money, the son of a rich father who has already prepared his son a warm place after graduation. At lectures it is swinging on a chair, chewing gum, talking on a mobile phone. Coursework and laboratory hands in the form of a favor with an indulgent kind. This type of teachers like to use in the form of guinea pigs, asking tricky questions and listening with pleasure to an unintelligible mooing. The session, as a rule, the impudent student surrenders, but flies at the same time in a very round penny. Looking into his eyes at the lectures, the teacher is fully aware that the student is now anywhere, but not on a pair. Causes quiet irritation and a desire to cause at least some kind of emotion. As a rule, to an indifferent student, teachers are absolutely indifferent and treat with quiet disgust, preferring to get off with the lowest passing grade, but only not to ruffle their nerves.

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