Calcium: dairy products such as milk, yoghurt and cheese., is needed for normal bones making strong, healthy bones and teeth., causes rickets. Your bones and teeth become weak and crumbly. , Vitamin A: Egg yolks, fish liver oils, dairy products, green vegetables, apricots and carrots., is needed for healthy eyes, especially seeing in dim light, causes night-blindness, the eyes are damaged, Vitamin C: citrus fruits such as oranges, lemons and limes, and in tomatoes, helps cells stick together in your skin and takes part in the reactions of aerobic respiration, causes scurvy. The gums bleed, the skin peels, the legs swell aerobic respiration stops. , Vitamin D: comes from fish liver oils, eggs yolks and cream.The skin makes this vitamin in the sunlight, helps your bones absorb the calcium they need to be hard and strong, causes rickets. The bones cannot absorb calcium. The bone structure is weakened and teeth crumble away, Iron: red meat, egg yolks, liver, apricots and green, leafy vegetables, is needed for the hemoglobin in your red blood cells., causes anemia. Your red blood cells do not contain enough hemoglobin. You look pale and feel very tired and weak.,

grade 7D-bio-6.5 Diet, growth and development

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