PDF chapter test TRY NOW

Fill in the blanks with the correct option given below in the table:
 
UndesirableModernizationFishAnnelid
WaterMan-madeDegradeHot
DecompositionWaterDissolved oxygenTyphoid
EutrophicationShellfishWastewaterNatural
 
1. Water pollution is harmful to many aquatic species because of reduced __________ levels.
 
2. __________ poisoning is caused due to water pollution.