Question

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

Answer 1

a.because it absorbs excess harmful water
b.because it blocks the drains and pipes
c.because it will cause land pollution
d.because it is very harmful resulting pollution and it causes diseases

Answer 2

Answer:

d.Untreated human excretions are a health hazard. It causes pollution of soil and water including the underground water. Thus, it contaminates the sources of water from which people collect water for drinking and household purposes. When this contaminated water is used for drinking, it can cause diseases such as cholera, typhoid, hepatitis, dysentery, etc., which may even lead to death.