Shards of metal are examples of what type of contamination

Physical contamination occurs when physical objects find their way into foods. These could include dirt, hair, bandages, metal shavings, glass, jewelry, etc. Natural objects, such as fish bones, are also considered physical contaminants.

Explanation:

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the maintenance of fluid balance during exercise. author information: fluid supplementation is necessary for exercise in which fluid losses must be offset by intake to avoid the negative effects of hypohydration on health and performance.