Give reasons

a. Eucalyptus trees are grown all along sewage ponds.b. Used tea leaves, solid food remains, cotton etc. should be thrown in the dustbin.c. Large amount of waste generated at public places must be disposed off properly.d. Untreated human excreta is a health hazard

1) Eucalyptus trees are grown near sewage ponds as they can grow in contaminated soils and soil containing high amount of salt and organic matter. Also, they absorb the metals, organic matter, nutrients and water from the sewage. 

2)These wastes choke the drains. They do not allow free flow of oxygen. This hampers the degradation process.

3)Large amount of waste generated at public places must be disposed off properly otherwise epidemics could break out.

4) Since a very large fraction of our people defecates in the open, on dry riverbeds, on railway tracks, near fields and many a time directly in water.It may cause water pollution and soil pollution

 

  • 15

thumb up is must

eucalyptus trees are grown all over because these absorb harmful substances and release pure water vapour in the atmosphere.

b. they should be released into the dustbin because if we do not do this they will choke the drains and may lead to decrease in bacteria .

c.because it may cause diseases and it may spread.

d.it is a human hazard as it may lead to pollution of water and soil and spread of diseases.

  • 5

a.We should plant eaculyptus trees all alng sewage ponds. these trees absorb all surplus waste water rapidly and release pure water vapour into the atmosphere.

b.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 . so they should not be thrown down the drain.

c.because it may cause diseases and it may spread.

d.Untreated human excreta is a health hazard. it may cause water and soil polution. both the ground and surface water get polluted. thus it becomes the most common route for water borne diseases like cholera, typhoid, polio, meningities , hepatitis and dysentry.

  • 4
What are you looking for?