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Презентация, доклад по теме Ecological Problems

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1. Презентация по теме Ecological Problems
2. Слайд 2
3. PROBLEMS OF THE ENVIRONMENTThe Earth is 4,600
4. TRAFFIC POLLUTIONIn big cities, cars and buses
5. FACTORY POLLUTIONFactories have also polluted the land
6. DEFORESTATIONAll over the world, people have cut
7. ACID RAINIt is one of the most
8. DESTRUCTION OF THE OZONE LAYERAround the Earth,
9. THE GREENHOUSE EFFECT Carbon dioxide (CO2) in
10. …but we can do something now.These problems are very serious for our future…

PROBLEMS OF THE ENVIRONMENTThe Earth is 4,600 million years old. Modern man has lived on the Earth for only 35,000 years but, in that time, we have changed our planet in many ways. Many of the

Слайд 1ECOLOGICAL PROBLEMS

ECOLOGICAL PROBLEMS

Слайд 2

Слайд 3PROBLEMS OF THE ENVIRONMENT
The Earth is 4,600 million years old. Modern

man has lived on the Earth for only 35,000 years but, in that time, we have changed our planet in many ways. Many of the things that we have done are good, but many, many more are not good for the Earth .

PROBLEMS OF THE ENVIRONMENTThe Earth is 4,600 million years old. Modern man has lived on the Earth

Слайд 4TRAFFIC POLLUTION
In big cities, cars and buses have polluted the air.

Many people in cities now have very bad health problems.

TRAFFIC POLLUTIONIn big cities, cars and buses have polluted the air. Many people in cities now have

Слайд 5FACTORY POLLUTION
Factories have also polluted the land and the water.
As a

result, many rivers and lakes are now dead.

FACTORY POLLUTIONFactories have also polluted the land and the water.As a result, many rivers and lakes are

Слайд 6DEFORESTATION

All over the world, people have cut down millions and millions

of trees.

As a result, many types of animals and plants are now disappearing.

DEFORESTATIONAll over the world, people have cut down millions and millions of trees.As a result, many types

Слайд 7ACID RAIN
It is one of the most alarming forms of air

pollution

Acid rain has caused much damage in Europe and the USA

It

ACID RAINIt is one of the most alarming forms of air pollution Acid rain has caused much

Слайд 8DESTRUCTION OF THE OZONE LAYER
Around the Earth, there is a special

type of oxygen called ‘ozone’ (O3)

Ozone is important because it stops ultraviolet radiation from the sun

Many aerosol sprays and factories destroy ozone and they have made a very big hole in the ozone layer

This means that too much ultraviolet radiation now enters the Earth

This is very dangerous because it can cause cancer

DESTRUCTION OF THE OZONE LAYERAround the Earth, there is a special type of oxygen called ‘ozone’ (O3)Ozone

Слайд 9THE GREENHOUSE EFFECT
Carbon dioxide (CO2) in the air has increased

a lot. This has formed a 'blanket' around the Earth. The heat from the sun cannot escape and so the temperature is rising (the 'greenhouse effect').

This means that the level of the sea is rising and the climate is changing.

THE GREENHOUSE EFFECT Carbon dioxide (CO2) in the air has increased a lot. This has formed

Слайд 10…but we can do something now.
These problems are very serious for

our future…

…but we can do something now.These problems are very serious for our future…

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