A certain wastewater treatment plant uses aerobic bacteria, anaerobic bacteria, and archaebacteria during secondary treatment of sewage. Unfortunately, during a bad blizzard the aerated tanks froze, killing the microbes inside. What is likely to result?
A. Solid material will not be effectively filtered out.
B. Methane production will go down.
C. Floc levels will diminish.
D. Floc will not be effectively filtered out.
Answer: C
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How many weeks does prenatal development last in humans?
a. 31 b. 38 c. 40 d. 45 e. 52
Which of the following occurs in all three stages of the birthing process, or "labor"?
a. dilation b. delivery c. contractions d. afterbirth e. rupture of amnion
Global estimates of denitrification in terrestrial ecosystems vary widely but are of the order 200 × 1012 g/yr, and more than half of that total occurs in wetland ecosystems
If restoration results in an increase in wetland area by approximately 25 percent, it would be expected that losses of nitrogen through denitrification would be closer to A) 175 × 1012 g/yr. B) 225 × 1012 g/yr. C) 275 × 1012 g/yr. D) 325 × 1012 g/yr.
In zygomycetes such as Rhizopus, the zygospore is haploid
____________________ Indicate whether the statement is true or false.