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Understanding Bedrock, Regolith, and Soil Evolution

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Understanding Bedrock, Regolith, and Soil Evolution

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Questions and Answers

What is the primary role of parent material in soil formation?

To influence the soil's water and air content

To determine the landform's slope and orientation

To establish the soil's fertility and nutrient levels

To provide weathered minerals to form the basic mineral structure and character (correct)

How does vegetation affect soil formation?

It establishes the soil's mineral structure and character

It increases the soil's fertility and nutrient levels

It influences the soil's organic content through plant and animal activity (correct)

It determines the soil's water content and air circulation

What is the primary focus of edaphology?

Studying soil fertility and nutrient levels

Studying soil formation and development

Studying soil as a medium for plant growth (correct)

Studying soil classification and distribution

What is the primary factor affecting soil development on steep slopes?

Hindering full soil development Signup and view all the answers

What is the relationship between soil types and climate types?

Soil types are correlated with climate types, affecting chemical reactions and organic activity Signup and view all the answers

What is the primary factor that contributes to the formation of a B horizon?

Illuviation Signup and view all the answers

Which of the following is a characteristic of the O horizon?

Rich in organic matter Signup and view all the answers

What is the primary reason why loam is regarded highly by agriculturalists?

Ideal clay content for cultivation Signup and view all the answers

What is the term for the smallest natural lump or cluster of soil particles?

Ped Signup and view all the answers

What is the primary factor that determines soil texture?

Sand-silt-clay ratio Signup and view all the answers