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Industrial ecology (IE) is the study of material and energy flows through industrial systems. The global industrial economy can be modelled as a network of industrial processes that extract resources from the Earth and transform those resources into by-products, products and services which can be bought and sold to meet the needs of humanity.
In sociology, the post-industrial society is the stage of society's development when the service sector generates more wealth than the manufacturing sector of the economy. ...
Social welfare, social services, government, health, public health, mental health, occupational safety and health, community organization, non-profit, law, corporate ...
Before the rise of modern states, the Christian church provided social services in (for example) the Mediterranean world. When the Roman Emperor Constantine I endorsed Christianity in the 4th century, the newly legitimised church set up or expanded burial societies, poorhouses, homes for the aged, shelter for the homeless, hospitals, and orphanages in the Roman Empire.
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