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The human population exploits and depends on many animal and plant species for food, mainly through agriculture, but also by exploiting wild populations, notably of marine fish. [ 10 ] [ 11 ] [ 12 ] Livestock animals are raised for meat across the world; they include (2011) around 1.4 billion cattle , 1.2 billion sheep and 1 billion domestic pigs .
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Maslow's hierarchy of needs is often represented as a pyramid, with the more basic needs at the bottom. [1] [2] Maslow's hierarchy of needs is an idea in psychology proposed by American psychologist Abraham Maslow in his 1943 paper "A Theory of Human Motivation" in the journal Psychological Review. [1]
In addition to basic needs, humans also have needs of a social or societal nature such as the human need for purpose, to socialize, to belong to a family or community or other group. Needs can be objective and physical, such as the need for food, or psychical and subjective, such as the need for self-esteem. Understanding both kinds of "unmet ...
Various folk cultures and traditions assign symbolic meanings to plants. Although these are no longer commonly understood by populations that are increasingly divorced from their rural traditions, some meanings survive. In addition, these meanings are alluded to in older pictures, songs and writings.
Self-preservation urges animals to collect energy and resources required to prolong life as well as resources that increase chances of survival. Basic needs are available to most humans (roughly 7 out of 8 people), [11] and usually rather cheaply. The instinct that drives humans to gather resources now drives them to over-consumption or to ...
Human uses of plants include both practical uses, such as for food, clothing, and medicine, and symbolic uses, such as in art, mythology and literature. Materials derived from plants are collectively called plant products .