showing soil layers earth cross section schematic education poster sand gravel loam clay top with

navigate by keyword : soil natural ground vector earth rock education science underground illustration nature stone grass environment organic geological section cut bedrock dirt cross plant clay geology sand design topsoil structure formation humus outdoor clipart plain horizon image cartoon land mineral layer outside pattern surface parent educational diagram landscape art pebble graphic

Showing soil layers of earth. Cross section, schematic education poster. Soil, sand, gravel, loam, clay. Top layers with grass, tree and stones.