Which Substance Is Largely Removed by the Combined Effects of Primary

question 4

Multiple Choice

Which substance is largely removed by the combined effects of primary and secondary wastewater treatment? 

• A) toxic metals and synthetic organic chemicals 
• B) radioactive isotopes 
• C) organic oxygen-demanding wastes 
• D) organic pesticides

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Definitions:

Consumer Surplus

The variation between the sum consumers are willing to allocate for a good or service and the sum they actually allocate.

Surplus II

An additional amount of a resource, product, or service that exceeds the amount demanded or utilized.

Consumer Surplus

The discrepancy between what consumers are willing to spend on a good or service and their actual expenditures.

Surplus II

An excess of supply over demand in the market, leading to excess goods and potential lower prices.