Ecology Problems

Ecological Problems

• For thousands of years people lived in harmony with environment and it seemed to them that natural riches were unlimited. But with the development of civilization man’s interference in nature began to increase. Large cities with thousands of smoky industrial enterprises have appeared all over the world today and polluted the environment

GLOBAL PROBLEMS

AIR POLUTION

SOIL POLUTION

PLASTIC POLLUTION

WATER POLUTION

GLOBAL WARMING

OZONE DEPLETION

RADIOACTIVE POLLUTION

• Factories and plants cause a great damage to the environment. Dangerous dust and blow-outs of the enterprises are being carried out by winds for long distances destroying the life around. People all over the world are worried about what is happening to the environment. The environment protection is a global problem.

• . ENDANGERED SPECIES.
• Vast forests are cut and burn in fire. Their disappearance upsets the oxygen balance. As a result some rare species of animals, birds, fish and plants disappear forever, a number of lakes and rivers dry up.

Siberian Tigers are on the verge of extinction.

Global Warming

• Global warming process of the gradual increase fair-annual temperature of the atmosphere of the Land and World ocean.
•     The Scientists were defined: uncontrolled surges in atmosphere and other thoughtless behaviour of the person was a reason of the steady change the climate, capable completely to change the planet.

Antarctic Glaciers Melting Rapidly

• A new study of glaciers in a portion of the Antarctic finds 84 % of them have retreated over the past 50 years in response to a warmer climate.
• The climate in the region has warmed by more than 4.5 degrees Fahrenheit (2.5 Celsius) in the last 50 years

The hole in the ozone layer

• Ozone absorbs harmful ultraviolet radiation which is produced by the Sun. Ultraviolet radiation can damage cells of living things- plants, animals and people. The damage of ozone has been caused by complex chemical reactions involving chlorine and bromine.

1979

2000

LAND DEGRADATION

Water and wind erosion are now the two primary causes of land degradation; combined, they are responsible for 84% of degraded acreage. Each year, about 75 billion tons of soil is eroded from the land—a rate that is about 13-40 times as fast as the natural rate of erosion.  Approximately 40% of the world's agricultural land is seriously degraded.

• The loss of soil fertility due to erosion is further problematic because the response is often to apply chemical fertilizers, which leads to further water and soil pollution, rather than to allow the land to regenerate.

World map indicating areas that are vulnerable to high rates of water erosion.

Water pollution

Approximate Decomposition Times in a Landfill

Traffic ticket

Banana peel

1 month

Wool sock

Up to 6 month

Wood stakes

1 year

Wax paper cup

4 years

Painted wooden stake

Tin cans

5 years

13 years

Aluminium cans, plastic bottles

100 years

Glass containers

Up to 500 years

never