1s2,2s2.2p6,3s2,3p6,3d4,4s2
All problems are caused by a factor in which human beings play an important role in its cause.
Answer:
The unfiltered polluted water is not clear and is yellowish in color. The filtered polluted water is clear with a little bit of yellow color. The pH readings are beyond the range in which organisms can grow. Based on these observations, I can conclude that even though water may look clean, it could actually not be clean or it can still be harmful to living things.