Question

why should oils and fats not be poured down the kitchen sink​

Answer 1

Answer:

Cooking oil and fats should not be thrown down the drain.They can harden and block the pipes.In an open drain the fats clog the soil pores reducing its effectiveness in filtering water.

Answer 2

Answer:

on throwing these down the drain would block the drain pipe. And in open drains these would hamper the pores of the soil and deduct the efficiency of soil in filtering water.

Explanation:

Fats and cooking oil get hard after they are cooled down.