Geography
(i) How can you say that soil has evolved over millions of years?
(ii) Name one important constituent of soil that adds fertility to the soil.
Soil Resources
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Answer
(i) Soil changes with age - As a soil ages, it gradually starts to look different from its parent material. That is because soil is dynamic. Its components—minerals, water, air, organic matter, and organisms—constantly change.
(ii) One important constituent of soil that adds fertility to the soil is humus.
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