When is ozone considered a pollutant? a. in the stratosphere b. in the mesosphere c. in the troposphere d. in the thermosphere

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the economic activity signified in that scenario is a. production

in general, market production makes reference to the elaboration of a product or service which is destinated for economic purposes (to be sold) at money-price in a market. such product or service has to be principally tradable for money.

there is no money exchange involved in distribution, generalized reciprocity or balanced reciprocity.

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