Soil - A Precious Resource Flashcards
What is soil erosion?
It is a gradual process of movement and transportation of the topsoil by different agents, causing it to deteriorate in the long term.
What is soil erosion?
It is a gradual process of movement and transportation of the topsoil by different agents, causing it to deteriorate in the long term.
What are the agents of soil erosion?
Wind, water, and mass movement.
What are the agents of soil erosion?
Wind, water, and mass movement.
What is soil degradation?
The decline of soil condition caused by its improper use or poor management.
What is desertification?
Land degradation in drylands, resulting in many factors, including human activities and climatic patterns.
What does soil provide?
Nutrients, water, and oxygen.
Why is soil important?
Soil supports a huge range of organisms that are essential for a healthy environment. Soil also regulates Earth’s climate, which helps in climate change.
Why is soil considered a renewable resource?
Soil that is eroded can be recovered fairly quick in the human timescale.
Why is soil considered a non-renewable resource?
Soil that has been degraded may not regenerate in a humans lifespan.
What are the main causes of soil erosion?
Deforestation, overgrazing, over cropping, and constructional and recreational activities.
Why does deforestation contribute to deforestation?
Trees provide shelter for the soil and without them the soil is left vulnerable to wind, rain, and sunlight.
Why does overgrazing contribute to soil erosion?
When the soil is too compacted and compressed, it is difficult to grow crops because the roots won’t be able to grow.
Why does construction contribute to soil erosion?
It exposes the soil to erosion by wind and water.
Why does over cropping contribute to soil erosion?
Using soil repeatedly can make the soil degraded due to the overuse of it and its nutrients.
