Which of the following would use the most energy and natural resources?
A. Refusing to buy disposable items
B. Taking the bus to work instead of driving
C. Buying fewer clothes and shoes
D. Buying a new car every five years to ensure high fuel efficiency
E. All of these examples use about the same amount of energy
Answer: D
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Why did Congress require the Environmental Protection Agency to establish minimum drinking water standards?
A) Long-term exposure to small amounts of chemicals was proven to be hazardous. B) Levels of contaminants in municipal drinking water systems rose to toxic levels. C) The long-term effects of small amounts of chemical contamination were unknown. D) Laboratory detection limits of common contaminants became much more sensitive.
Sickle cell anemia is the result of how many changes in each b-chain of normal hemoglobin?
A) 1 B) 2 C) 3 D) 4
The recommended percentage of daily value per serving of which of the following must be shown on a food packaging label?
A) folate B) iron C) sodium D) thiamin
Shield volcanoes commonly have
A. fire fountains. B. dikes at depth. C. lava flows. D. fissure eruptions. E. All of these choices are correct.