Nitrogen is available to plants only in the form of A) N2 in the ...

[penza]

Nitrogen is available to plants only in the form of
A) N2 in the atmosphere.
B) nitrite ions in the soil.
C) uric acid from animal excretions.
D) amino acids from decomposing plant and animal proteins.
E) nitrate ions in the soil.

[plus1]

I recall doing this last year, it's E, bye bye!

[penza]

Thanks so much!