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Answer:
Formation of Soil
The soil has taken thousands of years to form. Soil formation takes place in the following ways:
Big rocks break down into smaller rocks by continuous action of wind and rain. It takes many years for these rocks to break down into smaller rocks.
Rocks are mainly broken by two types of weathering- physical weathering and chemical weathering. A number of natural force, called agents, work to break down the parent rock into tiny particles of soil. These agents include wind, water, the sun’s heat, and plants and animals.
These pieces get further broken down to form sand and silt and, ultimately, into finer particles and the process continues. This process is very slow. It takes thousands of years to form a just 1cm layer of soil. These fine particles form the top layer of the soil
Answer:
Profile A
- C - horizon
- R - horizon
Profile B
- A - Horizon
- B - Horizon
- C - Horizon
- R - Horizon
Profile C
- A - Horizon
- C - Horizon
- R - Horizon
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