Question

7. Fill the cross word puzzle with suitable words using the hints given below:
I
Across
4. filtration process in waste water
treatment
5. water conservation method
DOWN
1. disease caused by drinking untreated water
2. treating waste water with microbes
3. this is removed in waste water treatment​

Answer 1

Answer:

where is the picture of the crossword puzzle.... ,? show the pic to get the answer

Answer 2

Answer:

I don't know answers please sorry