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Questions and Answers
What is soil primarily composed of?
What is soil primarily composed of?
- Fungi, bacteria, and algae
- Sand, gravel, and clay
- Minerals, organic matter, water, and air (correct)
- Chemicals and pollutants
What role does soil play in plant growth?
What role does soil play in plant growth?
- Produces harmful gases for plants
- Provides support, nutrients, and water to plants (correct)
- Acts as a barrier to plant roots
- Prevents water absorption by plants
Why is soil considered a non-renewable resource?
Why is soil considered a non-renewable resource?
- It takes centuries to form and can be depleted faster than it forms (correct)
- It has no impact on the environment
- It is not essential for agriculture
- It can be easily replenished through human intervention
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Study Notes
Soil Composition
- Soil is primarily composed of 45% minerals, 25% water, 25% air, and 5% organic matter
Soil's Role in Plant Growth
- Soil provides physical support and anchorage for plant roots
- Soil supplies plants with essential nutrients, water, and air
- Soil's pH level and nutrient availability affect plant growth and development
Soil as a Non-Renewable Resource
- Soil formation is a slow process, taking hundreds to thousands of years
- Soil erosion and degradation are significant concerns, as they can lead to irreversible soil losses
- Soil conservation and sustainable management practices are crucial to preserve this valuable resource
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