Soil Contains Human Pathogens,for Instance _____

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

Q34: Producers obtain CO₂ from _.<br>A)eating other producers<br>B)the

Q35: Which bacteria assisted in cleaning up after

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

Q41: Sulfate-reducing bacteria are characteristically _.<br>A)strict anaerobes<br>B)desulfovibrio<br>C)utilizing sulfate