#1. Clean water that is fit for use is available to all.
#2. Sewage is wastewater released by ….
#3. sewage is a complex mixture containing …….
#5. salmonella paratyphi whicdh causes …….
#6. vibrio cholera which causes …..
#7. Under the ground a network of big and small pipes called …..
#8. Sewers forming the ………
#9. Write full form of WWTP
#10. Sludge decomposed by the ……. bacterial.
#11. We should plant ……. trees all along sewage ponds
#12. Cleaning of water is a process of removing ……… before it enters a water body or is reused
#13. Wastewater released by houses is called ……..
#14. Dried ____is used as manure.
Drains get blocked by ______ and _______.
#17. Wastewater is treated in a _____ treatment plant
#18. Treatment plants reduce ______ in wastewater.
By-products of wastewater treatment are ______and ______.