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.
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Why are humans and other living things not crushed by the pressure of the atmosphere?
A) Atmospheric pressure increases with altitude and is, therefore, lowest near the Earth's surface. B) While the atmosphere exerts pressure, it is a negligible amount. C) Humans and other living things exert pressure outward, counterbalancing atmospheric pressure. D) The tropopause serves as a buffer against the pressure exerted by the atmosphere.
Organic acids can chemically weather a rock. Where would these acids originate?
A) Decay of granite B) Thermal reaction between water and limestone C) Secretion from and decay of vegetation D) Leaching from the E horizon
In a Lewis structure, which of the following atoms can have more than eight electrons associated with it?
A) C B) O C) S D) none of these
The term "Anglo America" in reference to the United States and Canada is more relevant than ever today
Indicate whether the statement is true or false