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The bottom of the ocean floor is not considered part of the biosphere because no sunlight reaches it.
Q3: Which of the following correctly lists the
Q4: When you exhale what two stages of
Q4: There is more nitrogen gas in the
Q6: Which of the following is involved in
Q11: If you want to know the probability
Q14: Phosphorus is needed by living organisms because
Q22: Populations of amphibians,including frogs and toads,have been
Q25: The bases in DNA are complementary.A always
Q34: Which of the following genetic disorders is
Q55: CAM photosynthesis limits CO<sub>2</sub> fixation to nighttime