Overpopulation is a condition where an organism's numbers exceed the carrying capacity of its habitat. The term often refers to the relationship between the human...
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Oil depletion occurs in the second half of the production curve of an oil well, oil field, or the average of total world oil production....
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Economics is the social science that analyzes the production, distribution, and consumption of goods and services. The term economics comes from the Ancient Greek...
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Democracy is generally defined as a form of government in which all adult citizens have an equal say in the decisions that affect their lives....
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Poverty is the lack of a certain amount of material possessions or money. Absolute poverty or destitution is inability to afford basic human needs,...
A pandemic is an epidemic of infectious disease that is spreading through human populations across a large region; for instance multiple continents, or even...
Marine pollution occurs when harmful, or potentially harmful effects, can result from the entry into the ocean of chemicals, particles, industrial, agricultural and residential waste,...