Question

Question 18

Why should we not throw
(a) Used tea leaves into the sink?
(b) Cooking oil and fats down the drain?

Answer 1

(a) We should not throw used tea leaves into the sink because it may choke the drain-pipe of the sink and do not allow the free fall of wastewater through them.
(b) We should not throw cooking oil and fats down the drain because cooking oil and fats down the drain as it can harden and block the drainage pipes. In an open drain, the fats clog the soil pores reducing its effectiveness in filtering water.