17 Questions
Which layer of the soil is rich in minerals washed down from the topsoil?
The subsoil layer
What is the term used to describe the different layers of soil?
Soil horizons
What is the primary component of the organic layer of soil?
Dark, fertile humus
Why is the subsoil layer not as good for plants as the topsoil layer?
It is too hard and rocky
How long does it take for soil to form in the parent rock layer?
A long period of time
What is the role of minerals in soil?
They provide important nutrients for plants
What do living organisms in soil contribute to?
The soil's health and fertility
What is the purpose of air in soil?
To allow plants to breathe
What happens to organic matter as it breaks down in soil?
It enriches the soil with nutrients
What is the result of soil erosion?
The soil's health and environment are affected
What are the natural forces that contribute to soil erosion?
Wind, water, and human activities
What is the main cause of wind erosion?
Strong winds blowing away loose soil particles
What can happen to the soil when it is cleared of vegetation or the natural landscape is changed?
It becomes more vulnerable to erosion by wind or water
What is a consequence of soil erosion on the environment?
Reduced crop productivity
What is the term used to describe the process of productive land becoming barren and desert-like?
Desertification
What is carried away by water or wind erosion that can harm aquatic ecosystems and contaminate drinking water sources?
Eroded soil along with chemicals it might carry
Why is it important to prevent soil erosion?
To prevent problems like reduced soil fertility, water pollution, and changes in the landscape
Test your knowledge about soil, its composition, and its role in supporting life on Earth. Learn about the different layers of soil, its importance in natural processes, and its functions in nourishing plants and purifying water.
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