Which of the following conditions results from the operation and subsequent use of old landfills built before 1976?

A. Leachate from old landfills can contaminate groundwater.
B. Decommissioned landfills cannot be used as locations for schools, industries, parks, or golf courses for 300 years after the closing of the landfill.
C. Hydrogen gas is generated by the organic decomposition and can be sold as a by-product.
D. Modern sanitary landfills are lined with a porous material.


Answer: A. Leachate from old landfills can contaminate groundwater.

Environmental & Atmospheric Sciences

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In a Lewis structure, which of the following atoms can have more than eight electrons associated with it?

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Indicate whether the statement is true or false

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