Earth's rocks, soils, and surface landforms together comprise the
A) lithosphere.
B) biosphere.
C) troposphere.
D) hydrosphere.
Answer: A
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Gold is removed from the rock that contains it by a series of leaching operations that all involve the use of
a. sulfuric acid b. nitric acid c. arsenic d. highly toxic cyanide salts e. mercury
What is a fjord?
a. A broad, protected channel b. A deep, narrow bay modified by glaciers c. The shoreward limit of marine erosion d. A retreating glacier e. A wave-cutsea cliff
L. F. Richardson
A) contributed to chaos theory. B) was strong supporter of the Allies during World War II. C) never went to college. D) was a communist. E) all of the above
Which of the following best describes an invasive species?
A) Non-native species become invasive when they become established in a new area, taking over niches that were already occupied by native species. B) An invasive species is any non-native introduced species, whether it becomes established or not. C) Approximately 90% of all introduced non-native species become invasive species. D) Dispersal, even if anthropogenic, is a normal biogeographic process and, therefore, no cause of alarm.