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Understanding Erosion: Causes, Effects, and Prevention Methods

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Understanding Erosion: Causes, Effects, and Prevention Methods

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Questions and Answers

What is the main cause of topsoil loss in rill erosion?

Water carrying away topsoil in impromptu streams (correct)

Water acting like a broom to clear out topsoil in a whole area

Water sapping away the topsoil near water bodies

Wind gusts blowing away unsecured soil

How can erosion affect the taste of fish like catfish?

By causing runoff downstream

By making the water full of germs

By washing away man-made fertilizers

By making the fish taste like mud due to topsoil in water (correct)

Why do most farmers opt for using expensive fertilizers after losing topsoil?

To fix sheet erosion issues

To make up for fertile topsoil lost (correct)

To prevent bank erosion

To enhance the growth of shrubs

What is the primary reason that erosion becomes a problem according to the text?

Absence of vegetation to hold soil in place Signup and view all the answers

What technique involves planting crops in long rows with alternating bands to prevent topsoil loss?

Strip farming Signup and view all the answers

Why are slopes particularly vulnerable to erosion according to the text?

'Water can run quickly downhill on a slope' Signup and view all the answers

'Sheet erosion' primarily affects a whole area by which method?

'Water acting like a broom to clear out the topsoil' Signup and view all the answers

'Bank erosion' occurs when which factor saps away topsoil near water bodies?

'Bodies of water' Signup and view all the answers

What is soil erosion?

The process by which topsoil is removed Signup and view all the answers

Which part of soil is about the consistency of ashes?

Silt Signup and view all the answers

Why does clay turn to paste when water is added?

Due to its tiny particle size and lack of space for water movement Signup and view all the answers

What happens when excess water is added to sand?

It drains out easily along with nutrients Signup and view all the answers

Why is topsoil a crucial part of soil composition?

It contains a mix of sand, clay, silt, and organic materials important for plant growth Signup and view all the answers

How does silt differ from sand and clay in terms of water retention?

Silt retains water better than sand but not as well as clay Signup and view all the answers

What risk does excess water pose in terms of soil erosion?

It leads to the removal of topsoil through erosion Signup and view all the answers