Introduction
... dentally step on it you will be stung. Sea urchins are found on rocks and in seaweed and sting in the same way. The Portuguese ... » Read on
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Definition
Healthy eating is about maintaining a balanced diet. This means eating foods from all the different food groups in the right amo ... » Read on
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Prevention
Strict vegetarians (who do not eat eggs) and vegans can help to prevent B12 deficiency by choosing breakfast cereals fortified w ... » Read on
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Prevention
Human and animal waste Human and animal waste (feces or excreta) must be treated, to prevent or remo ... » Read on
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