Ideas in this flowchart

• Soil structure
• It is the shape in which soil particles group together to form aggregates.
• Aggregates create spaces within the soil.
• The spaces allow water to move.
• The spaces allow roots to grow.
• The spaces allow soil organisms to function.
• Factors that generally increase aggregation
• Biological activity
• Organic additions
• Wetting, drying, freezing, and thawing
• Factors that can reduce aggregation
• Tillage
• Compaction
• Sodium