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Ecological problems
Содержание
The reason.Large cities with thousands of smoky industrial enterprises appear all over the world today. The by-products of their activity pollute the air we breathe, the water we drink, the land
Слайды и текст этой презентации
Слайд 3Why do some species of animals and plants disappear from
the Earth?
Every year world industry pollutes the atmosphere with about
1000 million tons of dust and other harmful substances. Many cities suffer from smog. 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 rivers and lakes dry up.AIR
water
LAND
Слайд 4Radiation.
Catastrophe on the Chernobyl nuclear power station – April 26,
1986.
That catastrophe can be considered as the largest disaster of
the 20 th century.
Слайд 6What can each of us do to protect the environment?
Everyone
should make a contribution to environmental protection. We should protect
our woods and rivers, protect our nature. Nature is a source of all goods in our life, and we should not only take, but also return.
