Nitrogen-fixing bacteria include
A) cyanobacteria
B) Clostridium
C) Klebsiella
D) all of the above
Correct Answer:
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Q1: Some microbes can survive drought by forming
A)
Q2: The sulfur cycle is of special importance
Q3: The loss of water from pores of
Q3: Producers obtain CO₂ from _.
A)eating other producers
B)the
Q7: Denitrification is:
A)a process by which nitrates are
Q8: Which of the following statements about ecology
Q10: Sulfur oxidation is carried out by _.
A)Thiobacillus
B)Desulfovibrio
C)Desulfomonas
D)Desulfotomaculum
Q17: Which is a primary symbiotic nitrogen fixer
A)Azotobacter
B)Rhizobium
C)Cyanobacteria
D)Clostridium
Q18: In the sulfur cycle many microbes convert
Q19: Most denitrification is due to _.
A)Rhizobium
B)Azotobacter
C)Pseudomonas
D)Nitrosomonas
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