Producers Obtain CO₂ from _____

Q29: The most predominant microbial group found in

Q30: Which is the order of purification procedures

Q31: Which would not be the habitat for

Q32: Which is a primary symbiotic nitrogen fixer<br>A)Azotobacter<br>B)Rhizobium<br>C)Cyanobacteria<br>D)Clostridium

Q33: In the phosphorous cycle,inorganic phosphates are converted

Q35: Which bacteria assisted in cleaning up after

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