Contamination of food items by other living organism is known as food contamination. It<span> refers to foods that are spoiled or tainted because they either contain microorganisms, such as bacteria or parasites, or toxic substances that make them unfit for consumption.</span>
Endoskeleton I think it's a little hard to read this question
Dietary protein serves several important functions. It provides the essential amino acids, which are used for protein synthesis in the growth and repair of tissue, and it is the body's principal source of nitrogen.
Explanation:
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secondary occurs among critically ill, older or hospitalized patients. it is reversible if the illness resolves
primary immunodeficiency are genetically determined they typically occur during infancy and childhood
