To understand human needs adequately , it is useful to classify them as to type . Thus , we have innate or primary needs such as food , shelter , water , rest to overcome fatigue and so on . These are innate needs that are physiological in nature and the gratification of this needs are necessary for survival . The other major type of need is called acquired or secondary need . These needs are dependent upon our experience . They are learned and vary from person to person...











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