The region of the earth inhabited by living organisms is called the
A) niche.
B) ecosystem.
C) community.
D) biosphere.
Correct Answer:
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Q14: Geosmins are
A) a strain of Bacillus.
B) nitrogen-fixing
Q14: Nutrient poor waters are described as being
A)
Q15: The practice of cells turning on the
Q16: Bacteria survive adverse conditions by forming
A) zygotes.
B)
Q18: Which of the following soil organisms play
Q20: Biofilms are likely to be found in
Q21: Turning inorganic carbon into organic carbon is
Q22: Atmospheric nitrogen is
A) used directly by plants.
B)
Q24: Sulfur occurs in all living matter primarily
Q33: The organisms isolated from hydrothermal vents are
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