The sites in certain clay minerals which fix potassium ions are ...

[Beheh]

The sites in certain clay minerals which fix potassium ions are also capable of fixing which other ion?
 
  A) NO3- B) Ca2+ C) H2PO4- D) NH4+ E) H+

Question 2

You would be most likely to find P deficient plants in which location?
 
  A) a corn field in sub-Saharan Africa
  B) a vegetable garden in India
  C) a pasture in the Netherlands
  D) an apple orchard in New York
  E) a Douglas Fir forest in Oregon

[poopface]

Answer to Question 1

D

Answer to Question 2

A