Distinct geological layers in a soil profile from topsoil to bedrock
Keywords
dirtied,
geology,
cross section,
layer,
earth,
bedrock,
sediment,
ground,
horizon,
topsoil,
grass,
stratification,
dirt,
clay,
nature,
environment,
rock,
gravel,
science,
agriculture,
root,
underground,
texture,
profile,
education,
land,
surface,
organic,
mineral,
erosion,
foundation,
ecology,
biology,
farming,
construction,
brown