ID 281115594 © Ladanovskayae | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
slade soil layers illustration educational poster nature education eco concept plant vector clay crust image fossil topsoil humus natural bedrock subsoil resources geological geology structure layer horizons profile formation section earth environment diagram ecology science horizon factor steps pedogenesis processes orders ground well underground material sand stone poster education