Earth's biosphere
A) is more a theoretical construct than an observable sphere of study.
B) only includes the biotic components of an ecosystem, with the abiotic components being considered part of the lithosphere, hydrosphere, or atmosphere, respectively.
C) consists of only terrestrial organisms, while the hydrosphere includes aquatic and marine organisms.
D) extends from the ocean floor to an altitude of approximately 8 km (5 mi) into the atmosphere.
D
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Historical evidence has proved Malthus correct
Indicate whether this statement is true or false.
All other factors being equal, a slope facing away from the Sun will tend to have
A) faster soil formation than the slope in direct sunlight, primarily because chemical weathering processes will be accelerated. B) faster soil formation than the slope in direct sunlight, primarily because physical weathering processes will be accelerated. C) slower soil formation than the slope in direct sunlight, primarily because chemical weathering processes will be slower. D) slower soil formation than the slope in direct sunlight, primarily because physical weathering processes will be slower.
Externalities, or the costs associated with the harmful side effects of producing goods and services, are reflected in the
cost of those goods and services. a. True b. False
A ball is tossed straight upward at 40 m/s with no air resistance. Six seconds later its speed is
A. zero. B. 10 m/s. C. 20 m/s. D. 30 m/s