Multiple Choice
Which of the following is NOT an agent of nitrogen fixation?
A) mycorrhizal fungi
B) cyanobacteria (blue-green algae)
C) bacteria associated with legume roots
D) lightning
E) actinomycete bacteria associated with alder roots
Correct Answer:

Verified
Correct Answer:
Verified
Q14: Plants in low nutrient ecosystems tend to<br>A)
Q18: Vanni and colleagues found a positive correlation
Q21: In a normal distribution, _ of the
Q22: Nitrate is converted to molecular nitrogen, N<sub>2</sub>,
Q23: Nitrogen enrichment of ecosystems by human activity
Q24: The release of ammonium (NH<sub>4</sub><sup>+</sup>) from decaying
Q26: Spiraling length of nutrients in streams can
Q29: "Nitrification" is the conversion of<br>Rev: 12_06_2013_QC_42091<br>A) carbon
Q30: Nitrogen export was greatest in streams draining
Q39: The "denitrification" reaction converts nitrate (NO<sub>3</sub><sup>-</sup>) to