1. Environment

2. All life, not only human life, on our planet
depends on three basic elements :
AIR
WATER
SOIL

3. Over the years, the human race has exploited the Earth and polluted the environment.
The situation is critical and we must find solution to the most serious aspects facing us today :
water pollution
acid rain
holes in the ozone layer
soil pollution
air pollution
greenhouse effect

4. chemical substances are released into the water
Water pollution
chemical substances are released into the water
chemicals from
factories
detergents from
households
oil from ships

5. Soil pollution Fertilizers - chemicals we use to have bigger crops,
pesticides- chemicals we use to kill the insects
and waste dumps ( whether legal or forbidden)
pollute the soil

6. Air pollution Cars produce exhaust fumes
Airplanes use huge amount of oxygen and release carbon dioxide
Factories and power plants release chemicals into the air

7. Acid rain
Smoke from factories and power plants mixes with water in clouds and becomes sulphurous or nitric acid which falls in raindrops.
This harmful rain – ACID RAIN – destroys plants, trees and pollutes the soil.

8. Holes in the ozone layer
The ozone layer is a layer in the atmosphere high above the surface of the Earth
ozone layer
It helps to protect the Earth from the sun’s ultraviolet radiation.

9. Holes in the ozone layer
When holes appear in the ozone layer,
harmful ultraviolet radiation reaches the Earth
UV radiation can damage our skin and cause skin cancer
ozone layer

10. Holes in the ozone layer
The holes are caused by
substances called CFCs
(chlorofluorocarbons).
CFCs were used in refrigerators, aerosol cans and in the manufacture of some plastic products.
Companies now make aerosols that don’t contain CFCs, and these are often marked ozone-friendly.

11. Greenhouse effect but carbon dioxide and other gases in the atmosphere
Normally, heat from the sun warms the Earth and then escapes back into space
but carbon dioxide and other gases in the atmosphere
trap the sun’s heat
working like glass in a greenhouse

12. Greenhouse effect Where does the CARBON DIOXIDE come from?
People and animals breathe in oxygen
and breathe out CO2.
We also produce CO2 when we burn coal,
oil, petrol, gas or wood.
Trees take CO2 from the air and produce oxygen.
In the last few years people have burned huge areas of rainforests.
This means that there are fewer trees and consequently
more carbon dioxide.

13. Greenhouse effect
Greenhouse gases

14. this process is called the
Greenhouse effect
When the heat from the sun does not escape back to space, it warms up the Earth.
this process is called the
GLOBAL WARMING

15. Greenhouse effect GLOBAL WARMING
Increasing global temperature will have some consequences:
drought in some parts of the world
melting of polar ice caps
sea level rise
increasing sea level will cause floods in coastal areas

16. Endangered plants and animal species
Earth's ecosystems have been affected by different human activities,
so many plant and animal species are in danger of extinction.
edelweiss
They have to be protected in national parks, zoos, botanical gardens and game reserves.
lynx

17. THINK GLOBALLY, ACT LOCALLY
What can we do about it?
One person alone cannot save the Earth but still there are things we can change together in order to help the Earth recover.
THINK GLOBALLY, ACT LOCALLY

18. THINK GLOBALLY, ACT LOCALLY
What can we do about it?
THINK GLOBALLY, ACT LOCALLY
Use public transport
Buy environment friendly products
Separate dangerous waste and waste that can be recycled
Compost organic trash
Save water and energy

19. THINK GLOBALLY, ACT LOCALLY
What can we do about it?
THINK GLOBALLY, ACT LOCALLY
Use alternative sources of energy
wind generators
solar panels

20. LIFE IN OUR HANDS