湖泊水体中微生物种类多样性与水面面积有关，面积越大，微生物多样性________。
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死区现象，即水体富营养化的根本原因是________________。
Which of the following reactors has a continuous input, output, and are completelymixed?
A. Batch reactor
B. Chemostat
C. Plug flow reactor
D. Swquencing batch reactor
We can enumerate cells in pure cultures by all of the following EXCEPT: ()
A. Most probale number
B. Plate counts
C. turbidity
D. PCR
Acetate is added to sites that have both Uranium and Iron in subsurface, which:
A. gets oxidized and it oxidizes both Iron and Uranium rendering them immobile
B. gets oxidized and it reduces both Iron and Uranium rendering them immobile
C. is oxidized by Geobacter and the consequent products immobilize Iron and Uranium
D. is more effective than addition of lactate when it comes to Uranium sequestration
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