aquifer
bedrock
clay
cow
cross
crust
cut
diagram
dirt
earth
education
environment
fertilizer
formation
geological
geology
grass
ground
horizons
humus
illustration
land
landscape
layers
material
mineral particles
natural
nature
organic
pattern
profile
rock
sand
science
section
soil
stone
structure
substratum
surface
texture
topsoil
underground
water
定額
Layers of soil, education diagram. Mineral particles, sand, humus and stones, natural fertilizer. Template for banners, page, posters, vector illustration.の素材 [FY31095737926]
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