More than 4000 premature deaths occur in the U.S. every year due to:
A) exposure to nuclear radiation. B) inhalation of particulate matter.
C) exposure to acid rain. D) elevated ozone concentrations.
D
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What countries are Russia's major trading partners, as measured by total foreign investment?
A) Great Britain and Germany B) the United States and Canada C) China and Vietnam D) Japan and South Korea E) Australia and New Zealand
Most of the water on Earth is found ________
A) underground B) in lakes and rivers C) in polar ice caps D) in oceans
________ crystallizes from an intermediate composition lava.
A. Basalt B. Andesite C. Composite D. Gabbro E. Rhyolite
Eolian saltation typically:
a. carries the heaviest part of the bed load. b. moves dissolved minerals. c. is the most effective kind of eolian erosion. d. transports silts and clays. e. makes sand bounce in the downwind direction.