For example, zeolite is used primarily because it adsorbs ammonia, while activated carbon is used primarily because it adsorbs {HEAD ~ organic molecules} and {TAIL ~ inorganic molecules} responsible for causing odors and undesirable colors 
For example , zeolite is used primarily because it adsorbs ammonia , while activated carbon is used primarily because it adsorbs { HEAD ~ organic molecules } and { TAIL ~ inorganic molecules } responsible for causing odors and undesirable colors
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH