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hard, protective covering made of calcium carbonate|protect the contents of the egg from bacteria and prevent moisture from leaving the egg too quickly|As the egg cools after it's laid, air is drawn through the pores of the egg forming this|contains large amount of protein for development, also known as egg white|twisted strands of fibers that are a special form of protein and hold yolk in center of egg|source of food for embryo and contains all fat in the egg|white spot on yolk where female's genetic material is found