<em>Answer</em>
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<em>Clastic sedimentary rocks are made up of pieces of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock</em>
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<em>Hope this help's you</em>
Prokaryotic cell are unicellular organisms. They usually attached to substrate through their appendages. Their appendages are found on their cell wall. To prevent this organism from attaching to their substrate the drugs should primarily attack the cell wall of the prokaryote. This will prevent them form attaching and allowing harmful compounds in entering the cell.
I think it is a good reason cause if the water was bad or not what it claims then 100%of the people would be complaining about it