Use the following to answer questions: 
-(Table: Coal Mine Pollution) The table Coal Mine Pollution shows the marginal social benefit and cost of various amounts of pollution from a coal mine. The efficient quantity of pollution is _____ tons.
Definitions:
Energy Saving
Practices, techniques, or products designed to reduce the amount of energy required to provide products and services, ultimately conserving energy resources.
Federal Trade Commission
A federal agency established to prevent anticompetitive, deceptive, and unfair business practices through law enforcement, advocacy, and education.
Native Ads
Advertising content that matches the form and function of the platform on which it appears, blending in with natural content to provide a less intrusive experience.
Disclosures
The act of making new or important information known, typically relevant in legal and financial contexts to ensure transparency and honesty.
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