Here's why:
* Sedimentary Rocks: These rocks are formed by the accumulation and cementation of sediments.
* Weathering: This process breaks down rocks into smaller pieces (sediments) through physical and chemical processes.
* Cementation: This process occurs when dissolved minerals in groundwater precipitate out between sediment grains, binding them together.
So, the cycle continues:
1. Existing sedimentary rock weathers.
2. The weathered material becomes sediments.
3. These sediments are transported and deposited.
4. Over time, the sediments are cemented together, forming a new sedimentary rock.