In the United States, if a person is concerned about an infectious disease such as the avian flu, the most reliable source of information would be the
A) United States Department of Human Health and Sciences.
B) United States Department of Agriculture.
C) National Academy of Sciences.
D) Centers for Disease Control and Prevention.
D
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The thickness of Earth's crust
A. on average is about 10 km. B. varies from about 5 km under the oceans to about 70 km under the continents. C. varies from about 10 km under the continents to about 60 km under the oceans. D. on average is about 60 km.
An erosional surface between a plutonic igneous or metamorphic rock and sedimentary (or volcanic) rock is called:
a) disconformity b) basal conglomerate c) nonconformity d) angular unconformity e) marker horizon
Corbusier wanted to rebuild the core of Paris into a radiant city of tall glass offices and apartments
Indicate whether the statement is true or false.
The Berkeley Earth Team estimates that Earth's average temperature increased about ________ since the 1950s.
A. 0.5°C B. 1.0°C C. 5.0°C D. 0.1°C E. 2.0°C