When the EPA began risk assessment in the mid-1970s, it was primarily concerned with
A) the safety of public transportation systems.
B) interactions between people and wildlife in national parks.
C) cancer risks associated with pesticides and toxic chemicals.
D) accidents associated with lost time on the job and workers' compensation.
Answer: C) cancer risks associated with pesticides and toxic chemicals.
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In the case of sanitary landfills, the cost of disposing of wastes is ________ as technology provides safer alternatives.
A. Slowly increasing B. Staying relatively stable C. Sharply decreasing D. Sharply increasing E. Slowly decreasing
The nation-state concept originated and has been used most extensively in Asia
Indicate whether the statement is true or false.
The oceans are part of the Earth’s
a. biosphere. d. mesosphere. b. hydrosphere. e. atmosphere. c. lithosphere
Light travels at a speed of approximately
A) 340.29 meters per second (1,116.44 feet per second) B) 80,500 kilometers per hour (50,000 mph). C) 1,000,000 kilometers per second (621,371 miles per second). D) 150,000 kilometers per hour (93,206 mph). E) 300,000 kilometers per second (186,333 miles per second).