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SOIL - Coggle Diagram
SOIL
Horizons
Organic layer: Humus
Eluviation layer: Leached minerals & and organic matter
Subsoil: Deposited minerals & metal salts
Topsoil: Minerals with hummus
Parent Rock: Partly weathered rock
Bedrock: Unweathered parent rock
Function
Support
Cycles
Nutrient: Contains nutrients
Carbon: Plants store carbon
Hydrologic: Water for plant use/groundwater
Digestion
Water provision
Respiration
Habitad
Texture
Controls water movement in soil
Color
Indicate the composition and condition
Influences chemical reactivity - nutrient availability
Factor in the erosion potential of a soil
Separates
Sand: Particles are the smallest of the three separates.
Slit: particles are between sand and clay in size
Clay: Particles are the largest of the three soil separates.
Unconsolidated mineral and organic matter on the Earth's surface
Components
Pore space: Air: 20-30% Water: 20-30%
Soil solids: Mineral: 45% Organic: 5%
Formed by the process of weathering
Rocks break down to form soil particles
Importance
Habitat for: macro and microorganisms
Plants need soil - animals need plants - plants and animals support human life