TheSlide.ru

Ecological problems 7 класс

Содержание

1. Ecological problems 7 класс
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…
11. Скачать презентанцию

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

Слайды и текст этой презентации

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…

Скачать презентацию

Обратная связь

Если не удалось найти и скачать доклад-презентацию, Вы можете заказать его на нашем сайте. Мы постараемся найти нужный Вам материал и отправим по электронной почте. Не стесняйтесь обращаться к нам, если у вас возникли вопросы или пожелания:

Email: Нажмите что бы посмотреть

Что такое TheSlide.ru?

Это сайт презентации, докладов, проектов в PowerPoint. Здесь удобно хранить и делиться своими презентациями с другими пользователями.

Для правообладателей