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NCERT Exemplar Solutions Class 9 Science Solutions for Why Do We Fall ill ? - Exercise in Chapter 13 - Why Do We Fall ill ?
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We should not allow mosquitoes to breed in our surroundings because they
(a) multiply very fast and cause pollution
(b) are vectors for many diseases
(c) bite and cause skin diseases
(d) are not important insects
Answer:
The answer is (b) are vectors for many diseases
Explanation:
Mosquitos are dangerous as they spread diseases like Malaria, Dengue, Japanese encephalitis, etc.
Video transcript
"hello everyone welcome to leader
learning
i am good fried your science tutor
today's question is
we should not allow mosquitoes to breed
in our surroundings
because they multiply very fast and
cause pollution
b are vectors for many disease
c bite and cause skin diseases
and d are not important insects
so here we have to find out which option
is correct
that why we know we should not let the
mosquitoes breed in our
surroundings we should not let
mosquitoes
breed
not let mosquitoes breed
in our surroundings
because
they are vectors
of various
diseases
like malaria
dengue and brain fever
so the correct option from this fact
will be
option b that is they are the vectors
for many diseases
so these mosquitoes should not be
allowed to breed
in our surroundings for more such videos
please subscribe leader learning and for
any doubts
drop a comment thank you"
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