3D Model: A Realistic 3D Cross-section Of Earth Layers. From Top To Bottom: A Vibrant Green Grass Layer With Detailed Texture, Followed By A Rich Brown Soil Layer With Visible Roots, Then A Horizontal Layer Of Clear Groundwater (light Turquoise With Bubbles And Transparency), And Finally A Deep Dark Soil Layer With Some Rocks. Each Layer Should Be Naturally Blended But Visually Distinct, With Realistic Textures And Lighting. The Background Should Be Plain White, Like A Scientific Or Educational Illustration.