Answer:
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Explanation:
<span>Direct election of senators to Congress occurred because of the 17th constitutional amendment.</span>
Layers of the soil are called horizons. Here are the horizons:
- Humus
- Topsoil
- Subsoil
- Fragmented rock
- Bedrock
Once a soil has developed, it forms layers called horizons. Beneath a surface layer of a plant remains, the topsoil is rich in decomposed plants and animal matter. The subsoil is mainly mineral particles, with much less organic material. The fragmented rock/bedrock is primarily small stones, and beneath it lies all bedrock.
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Which of the following soil-building processes contributed most to making the shaded area on the map suitable for agriculture? Floods deposited rich silt over the land in a soil-building process that made the land fertile.