6. It is a mixture of sand and clay that
contains large amount of decayed plants and
animals
L_AM
7. It is the uppermost layer of soil rich in
organic materials and minerals needed for
plant growth.
T_PSOL
8. It is located just below the topsoil. It is
composed of loosely arranged rocks, sand,
and clay.
S_BS_IL
9. It is composed of rocks that are slowly
breaking apart and is exposed to very little
weathering
PRNT ROCK
10. It is the lowest of the soil layers and is
made up of undisturbed large boulders and
gravel
B_DR_CK​