Nitrogen-fixing bacteria:
A) oxidize ammonia to nitrates or nitrites
B) oxidize ammonia to nitrous oxide
C) reduce nitrates to nitrites
D) reduce nitrogen gas to ammonia
Correct Answer:
Verified
Q3: Producers obtain CO₂ from _.
A)eating other producers
B)the
Q4: The sulfur cycle is of special importance
Q5: The most usable form of sulfur by
Q6: Some microbes can survive drought by forming
Q7: Denitrification is:
A)a process by which nitrates are
Q9: Nitrification is characterized by all of the
Q10: Sulfur oxidation is carried out by _.
A)Thiobacillus
B)Desulfovibrio
C)Desulfomonas
D)Desulfotomaculum
Q11: Sulfate-reducing bacteria are characteristically _.
A)strict anaerobes
B)desulfovibrio
C)utilizing sulfate
Q12: The loss of water from pores of
Q13: The mechanism whereby Rhizobium and the legume
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