What are deficiency diseases

an disease caused by the lack of some essential or important element in the diet, usually a particular vitamin or mineral.

deficiency diseases are those diseases that  are cause because of lack of element in diet, usually an particular vitamins or the minerals.

Explanation:

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exercising at a moderate intensity, and slowly increasing the duration.

answer

ben’s food poisoning was caused by cross-contamination

explanation

cross-contamination in food occurs when harmful bacteria is transferred to food from other foods, utensils or cutting boards. it happens often when handling raw meat , sea foods and poultry. in this case, because ben did not wash hands before and after handing the poultry, chances that bacteria transfer   from the poultry to the vegetable are high.