Which of the following items would you not expect to find in the soil of a stable, well-developed tropical forest on a mountain top with a granitic base?
a) Fungi
b) Smectite
c) CaSO4•H20
d) Gypsum
e) FexOx
f) Humus
g) Silica
h) H2O
i) CaCO3
j) Calcite
k) AlxOx