Question

(1)
Why should we not throw​
(a) used tea leaves into sink?

(2)
Why should we not throw​
(b) cooking oil and fats down the drain?

Answer 1

(1)

• Used tea leaves when disposed into the sink absorb water and swell. ​

• These swollen tea leaves choke the drainpipes. ​

• Moreover, it blocks the free flow of oxygen in the pipes and hampers the degradation process of organic wastes in the drainpipes.
  
  (2)
  

• Fats and cooking oil get hard after they are cooled down. So, by throwing these down the drain would block the drainpipe.​

• The oil thrown in open drains might clog the pores in the soil and reduce its efficiency to filter water and also affect marine life.