Broadly defined, the biosphere
A) only includes the biotic components of an ecosystem, with the abiotic components being considered part of the lithosphere, hydrosphere, or atmosphere, respectively.
B) extends from the ocean floor to an altitude of approximately 8 km (5 mi) into the atmosphere.
C) is more a theoretical construct than an observable sphere of study.
D) consists of only terrestrial organisms, while the hydrosphere includes aquatic and marine organisms.
E) encompasses both the lithosphere and the hydrosphere, but not the atmosphere.
B
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The __________ addresses specific targets for reducing the primary six greenhouse gases.
Fill in the blank(s) with the appropriate word(s).
True or False: The shape of Earth's magnetic field resembles that produced by a laboratory bar magnet
Indicate whether this statement is true or false.
Areas expensing continentality, such as Verkhoyansk, Russia, can have exceptionally large annual temperature ranges (e.g. a range of 105 C° (189 F°))
Indicate whether the statement is true or false
In which region of the world would you expect irrigation to be most critical?
A) Rainfall is high. B) PET is equal to rainfall. C) PET is lower than rainfall. D) PET is higher than rainfall. E) Rainfall is low.