Primary pollutants are those that are
A. The most threatening to people
B. The most dangerous
C. Released directly in dangerous forms
D. Classified by the EPA as the most dangerous and abundant
E. Produced in the greatest quantities
Answer: C
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The ecological efficiency of herbivores and carnivores is estimated by most authorities to be roughly:
a. 1 percent. b. 10 percent. c. 30 percent. d. 90 percent.
The driest desert on Earth is the:
A) Sahara B) Patagonian drylands C) Atacama D) region of northern Mexico
Gerrymandering is a political tool for ensuring an equitable balance between territory and political representation
Indicate whether this statement is true or false
If you examine the changes in day-by-day electrical demand in the United States, the pronounced daily drop in electrical consumption is most closely associated with
A) people going to work. B) people sleeping. C) home heating and cooling systems. D) daytime activities that consume little energy.