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the variation of life forms within a given ecosystem; often used as a measure of the health of biological systems.
pollutants that can be absorbed by the environment and cause no damage at low levels.
the process by which a firm decides on the level of production and the price that will create...
any useful or valuable things; people or human qualities including financial assets and physical...
amounts that are subtracted from the circular flow of income and expenditure in the economy.
preserving or protecting plants and animals in a safe or entire state.