Sulfate-Reducing Bacteria Are Characteristically _____

Q36: Soil contains human pathogens,for instance _.<br>A)Clostridium tetani<br>B)Bacillus

Q37: Sulfur oxidation is carried out by _.<br>A)Thiobacillus<br>B)Desulfovibrio<br>C)Desulfomonas<br>D)Desulfotomaculum

Q38: Nitrogen-fixing bacteria:<br>A)oxidize ammonia to nitrates or nitrites<br>B)oxidize

Q39: Which term is correctly matched with its

Q40: A niche includes all of the following

Q42: Eutrophication leads to:<br>A)a decrease in oxygen<br>B)plants become

Q43: Which bacteria are found in the desert

Q44: The sulfur cycle is of special importance

Q45: The indicator organism for human pathogens in

Q46: In testing for water purity,the presumptive test