Sulfur oxides are a major component of acid rain; they come primarily from the burning of
A) fossil fuels.
B) peat.
C) animal waste.
D) wood.
Answer: A
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One of the strongest earthquakes ever recorded in North America was the intraplate quake known asthe:a
1811 New Madrid, Missouri, earthquake. b. 1886 Charleston, Carolina, earthquake. c. 1906 San Francisco earthquake. d. 1964 Anchorage, Alaska, earthquake. e. 1984 Mount St. Helens, Washington, earthquake
Pronghorn antelope is the only North American antelope. It lives in the high desert of the Great Basin in the western U.S. Which of the following items are possible abiotic factors that an antelope has to content with?
a. the density of the local population of coyotes b. extreme maximum and minimum temperatures in the desert c. competition with wild horses for sparse vegetation for forage d. lack of available water e. lack of available water and extreme maximum and minimum temperatures in the desert
Which one of the following statements is true regarding the Earth's supply of fresh water?
A) The largest volume exists in lakes and reservoirs. B) There is more in the form of water vapor in the atmosphere than there is as liquid groundwater. C) There is more freshwater in glaciers and ice sheets than exists as groundwater. D) There is more water in rivers than exists as soil moisture and groundwater.
Large-scale migration from farms to cities was caused by which of the following?
A. Technological improvements in agriculture reduced the need for farm workers. B. More cultural activities were available in cities. C. Industrial jobs were available in cities. D. All of the statements are correct.