How do we contribute to environment problems - Our Environment, Science, Class 10 Video Lecture

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so we saw that ecosystems are a major
component of the environment but as I
told at the beginning of this lesson
that these days we are facing a lot of
environmental problems we often get to
hear about different types of agendas
different types of meetings to protect
our environment so what are these
environmental problems which are
actually becoming a threat to the
existing of meaning the existence of the
living organisms and the point is how do
we contribute to the environmental
problems what are we doing because it is
a scene that mostly it is human beings
who are responsible for spoiling the
environment so how are we actually
contributing or how are we adding to the
problems of the environment when it's
talk of our contribution the first thing
that comes to our mind is the disposal
of wastes so you would have seen that
there is so much of waste that comes out
of your house but on your house even out
of your room your home itself you will
have so many waste papers you will have
your use and throw pens so you have so
many things which are waste for you so
you will put them all in the dustbin
present in your room similarly there
will be so much of waste materials
coming out of your kitchen right and
similarly you will have so many dustbin
placed inside each room of your house
and finally from your house will come
out a lot of waste so similarly these
kind of waste comes from everybody's
house and that's how this entire waste
gets created now how I dispose of this
waste what kind of waste materials we
actually come out with so they all add
to the environmental problems take the
kind of materials which we use in our
day-to-day life actually decides what
kind of waste materials will come out of
my
house for example it is suppose if I am
using too much too many papers so the
earliest materials will also consist of
papers if I am using too many plastic
bottles so the when those bottles become
waste I mean when they are not good in a
good condition to keep things so we will
throw them all right so they will become
the waste materials so disposal of waste
is a concern because the kind of waste
which we are throwing actually matters a
lot so we will talk about this in detail
next is ozone layer depletion so I think
this is a new term for you waters as on
what is ozone layer and what after all
we mean by ozone layer depletion so
again we will talk about this topic also
in detail that what is also layer and
how is it causing problem to the
environment and how are we responsible
for the depletion of this ozone layer
extinction of wildlife you have seen
that there are so many animals which
used to exist before and gradually they
became extinct let us take the example
of Daniels dead dinosaurs used to exist
once upon a time but gradually they
vanished similarly these days also you
will get to hear about certain birds and
animals which are on the verge of
extinction so why are they becoming
extinct now what harm does it caused to
our environment if certain animals
become extinct now now can you answer
this question after we have studied the
food chain so in the food chain and in
the food web you saw that all animals in
one way or the other depend on some
other animals sowing out of that food
chain if you imagine that any one group
of animals become extinct for example
whether if I talk about maybe goats if
all the goats vanish do you think that
it will not cause any problem to the
ecosystem will it not cause any problem
to the food chain it will cause because
there are so many animals who are
dependent on goats for their food so
those animals will not get their phone
similary goats feed on so many things
like goats feed on plants so when do
those so many number of goats will
suddenly vanish so the so the consumers
of plants will also decrease so that
means the population of the plant will
also increase so this will cause at this
balance in the ecosystem so there will
be too many plants and there will be no
goats for higher animals to feed upon
for example if if I say that the Lions
used to feed on goats so if there are no
more no goats in the forest now so the
Lions will start starving there is
nobody to heat upon so the Lions will
start starving and suddenly one fine day
even the Lions will keep dying so the
Lions will also become extinct so if a
particular group of animals is becoming
extinct that is also a an issue for the
environment because the environment
wants everything to be balanced they
want all kinds of leaving organisms to
be present in a desirable number then
unnecessary usage of energy you would
have seen that there are so many people
maybe let us take your example you go to
your school maybe in your neighborhood
there are five children who go to the
same school but how do they go to their
school each of them go by their own car
so don't you think you are wasting
energy yes one because when you are use
in your car you are actually
unnecessarily wasting the petrol which
is driving your car from where is that
petrol coming that is nothing but it is
these are the sources of energy when we
learnt the lesser known sources of
energy in class mind we have discussed
all these things in detail right Nick
three sources of energy sources I
limited our population is increasing if
we do not make judicial use judicious
use of energy a day will come when there
will be no source of energy we will not
be able to produce energy at all right
so we should not waste energy
unnecessarily for example in this case
instead of each children each child
traveling by his or her own card the
five of them together and travel by a
bus so there is just one vehicle and all
of them can go to
enrich their school so that is a better
option that is you are saving a lot of
energy
similarly excessive use of pesticides so
the in-space t science or insecticides
they actually help in killing the pests
and insects and thereby improve the crop
production and crop yield but when you
start using too much of pesticides what
would happen these pesticides will get
accumulated in the soil or they will get
accumulated in the water so that the
entire water get will get polluted so
the soil will get volume different this
water or soil can enter into the food
chain and they can harm so many animals
because as I said just now that the food
chain is all related right
so these excessive use of pesticides is
also harming the environment by causing
pollution as well as by hiring the
leading organisms industrialization this
is another important factor which is hub
which is harming the environment the
products coming out of the industries
for example the gases the unbusy will
cause a lot of air pollution the waste
materials coming out of the industries
also caused a lot of problems to the
environment so with the modernization or
with too much of industrialization it
has been found that we have actually
added to a lot of environmental problems
moreover to set up industries many a
times it is seen that people will cut
down forests they will cut down the
trees and they're set up industries so
what is acting first of all we are
cutting down trees so we are anyways
causing an imbalance to the food chain
because you see producers are so very
important in the food chain so if there
are no producers we nobody will get food
because every leaving organism is at the
end of the day dependent on the
producers for their food so when we are
cutting down forests we are actually
ending up the producers now where the
producers are getting ended up and on
top of that we are resetting factories
there which is causing air quality
water pollution and soil pollution so we
are actually harming the environment so
these are some of our actions which
actually add up to the environmental
problems now in this lesson some of
these we have already discussed in our
class ninth lessons for example the use
of pesticides the usage of energy all
these things we have already studied in
class length so in this lesson we will
focus only on the first two things that
is the disposal of wastes and the ozone
layer depletion so we will concentrate
on these two issues in this lesson thank
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