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