Q1
How does soil form?
AWeathering of rocks plus organic matter
BOnly from water
COnly from air
DRandomly, with no process
SSCClass 7 (SSC)Geography (भूगोल)Ch 7 · Topic 1
Soils
Soil is a mixture of minerals, organic matter, and living organisms, and understanding soil types helps us grow crops more effectively.
Core concept
Soil forms through weathering of rocks over long periods, combined with organic matter from decomposed plants and animals.
How it works
Different soil types include sandy soil (large particles, drains quickly), clay soil (small particles, holds water), and loamy soil (a balanced mix).
Why it matters
Loamy soil is often considered ideal for farming because it retains moisture while allowing good drainage and air circulation.
Key detail
Soil fertility, affected by nutrients and organic matter content, is crucial for growing healthy crops and maintaining agricultural productivity.
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Quick notes
• Soil forms from weathered rocks + organic matter.
• This happens over long periods.
• Types: sandy (drains fast), clay (holds water).
• Loamy soil: balanced mix.
• Loamy soil is ideal for farming.
• It retains moisture, allows drainage.
• Soil fertility depends on nutrients, organic matter.
• This affects crop health, agricultural productivity.