The Earth's biosphere
A) consists of only terrestrial organisms, while the hydrosphere includes aquatic and marine organisms.
B) only includes the biotic components of an ecosystem, with the abiotic components being considered part of the lithosphere, hydrosphere, or atmosphere, respectively.
C) is more a theoretical construct than an observable sphere of study.
D) extends from the ocean floor to an altitude of approximately 8 km (5 mi) into the atmosphere.
Correct Answer:
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Q3: Photosynthesis involves
A) the release of stored carbon
Q4: An ecosystem is a(n) _ system in
Q5: An organism capable of synthesizing its own
Q6: A self-regulating association of living plants and
Q7: Chlorophyll absorbs only the _ and _
Q9: Which of the following is not a
Q10: A study of the spatial distribution of
Q11: Autotrophs that dwell in dark caves, in
Q12: Today, there are over 270,000 plant species
Q13: The study of the interrelationships between organisms
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