Question

4. Which of the following are low cost on site sewage disposal systems?
Se Composting pits
(b) Chemical toilets
(c) Septic tanks
(d) All of these​

Answer 1

Answer:

all of these are low cost on site sewage disposal system

Answer 2

Explanation:

Composting pits !

this a type of low cost sewage disposal system but very hazardous for our land soil