Защита ознового слоя земли

1.

Presentation
on the topic: "protection of
the ozone layer of the
earth"

2. .

Life on Earth emerged only because the ozone screen appeared, which
absorbs up to 99% of the ultraviolet radiation coming from the Sun. And
more than 700 million years ago, animals, in order to protect themselves
from the deadly rays of the sun, had to hide under water, put on a shell
or protective plates.

3. 1. OZONE IS A FACTOR PROVIDING A BIOLOGICALLY SAFE LEVEL OF UVR NEAR THE EARTH'S SURFACE (OVER 99% OF UVR IS ABSORBED BY THE

The ozone problem has two aspects:
1. OZONE IS A FACTOR PROVIDING A BIOLOGICALLY
SAFE LEVEL OF UVR NEAR THE EARTH'S SURFACE
(OVER 99% OF UVR IS ABSORBED BY THE OZONE
LAYER); MAINTAINING A STABLE CLIMATE OF THE
PLANET; CONTROLLING THE CONTENT OF CERTAIN
POLLUTANTS IN THE ATMOSPHERE. 2. THE OZONE
CONTENT IN THE OZONE LAYER IS REDUCED BY
ANTHROPOGENIC POLLUTANTS.

4.

The ozone hole is an area of ​low ozone. A decrease in the "thickness" of the
ozone layer leads to an increase in the amount of ultraviolet radiation from the
sun, causing an increase in the number of skin cancers in humans and animals.
Natural fluctuations in the concentration of ozone in the stratosphere have
become more complex due to the anthropogenic impact of humans.

5. Why are ozone holes formed?

• There are many reasons for the appearance of
ozone holes, but the most important of them
is human pollution of the natural
environment. In addition to chlorine atoms,
ozone molecules destroy hydrogen, oxygen,
bromine and other combustion products that
enter the atmosphere due to emissions from
factories, plants, flue gas CHP plants.

6. What can ozone holes lead to?

Due to the weakening of the ozone
layer, the flow of solar radiation
increases, which, in turn, can lead
to the death of plants and animals.
The effect of ozone holes on
humans is expressed primarily in
an increase in the number of skin
cancers. Scientists have calculated
that if the concentration of ozone
in the atmosphere falls by even 1%,
then the number of cancer patients
will increase by about 7,000 people
a year.

7. Depletion of the ozone layer can change the Earth's climate unpredictably.

8. Instructions for the preservation of the ozone layer.

• 1. Freon has been banned in many countries since
2010, therefore, by purchasing outdated equipment,
you deliberately harm the atmosphere. 2. Try to
minimize the use of canned chemicals. 3. Try to drive
less private vehicles, preferring public vehicles or, even
better, bicycles. 4. Green spaces enrich the air with
oxygen and prevent the destruction of the ozone layer.
Participate in landscaping your own city.
• 5. Reduce waste and garbage, so use eco-friendly bags,
prefer bulk goods rather than packaged goods. Choose
an eco-label product. Install a water filter, thus avoiding
buying bottles. Try to distribute or sell old shoes,
clothes and other things, and not send to a landfill. 6.
Children need to study well in order to get a good
profession later and help our Earth.

9. Here is our home - today and tomorrow - forever. Where a healthy sky is a healthy person.

10. Thanks for attention