Multiple Choice
To be useful to plants soil nitrogen must usually occur as:
A) N2 and NH3
B) NH3 and NO3-
C) NO3- and N2
D) N2 and NO2
E) NO2 and NO3-
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q1: From top to bottom the soil horizons
Q2: Oxygen solubility in freshwater lakes is affected
Q3: Which of the following is not a
Q4: The euphotic zone is the zone where
Q6: The older the soil, the ore the
Q7: The restoration of polluted areas using living
Q8: Clay soils have a large cation exchange
Q9: Diving organisms often have lower numbers of
Q10: Which adaptations do llamas possess to enable
Q11: How many amino acids exist in the