soil horizons Flashcards
1
Q
what is organic matter
A
decomposing vegetation by bacteria
2
Q
what is top soil
A
mineral rich soil, organic matter, supports life
3
Q
what’s subsoil
A
layer that accumulates minerals
4
Q
whats fragmented rock
A
broken rock from parent rock
5
Q
whats parent rock
A
layer of large unbroken rocks