Why should oils and fats be not released in the drain? Explain

cbse
cbse-class-7-science
waste-water-story

#1

Why should oils and fats be not released in the drain? Explain.
Answer:
Oils and fats harden and block the sewage pipes. In an open drain also, fats block porosity of soil which affects its water filtering efficiency. That is why oils and fats should not be released in the drain.