What fraction of all of the organic carbon on Earth results from microbial fixation of carbon dioxide in the oceans?
A) About 3/4
B) About 1/2
C) About 1/4
D) About 1/8
Correct Answer:
Verified
Q1: The open ocean is a(n)_ environment.
A)eutrophic
B)oligotrophic
C)neotrophic
D)phylotrophic
Q3: Cyanobacteria such as Synechococcus and Prochlorococcus are
Q4: Thiomargarita species store large amounts of _
Q5: Among the eukaryotic microbes in the phytoplankton,the
Q6: The chemolithotrophs that metabolize reduced sulfur compounds
Q7: Which of the following statements concerning the
Q8: The possible effect of failing to limit
Q9: The oceans contain about _% of the
Q10: The discharge of high levels of microbial
Q11: Barophilic bacteria _.
A)tolerate high concentration of barium
B)grow
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