Process:  -Water comes through a filter -The filter has small pores to catch pollutants -The filter will catch chlorine, heavy metals, and other chemicals -The filter allows water and mineral ions like fluoride to pass through -The water on the other side of the filter is much cleaner -
 Question: What is the effect of The water to be filtered is already gone through a previous filtered purification process on the filter will have to be replaced more quickly.?
against