Презентация на тему Ecological problems (презентация по английскому языку)

destruction
To pollute

a shortage
Pollution a population
To cause waste
Nuclear a dump
A weapon to poison
To survive

ruin, to build, to destroy;
the acid rain, a

greenhouse, global warming, ultraviolet radiation;
Savannas, deserts, rainforests, a forecast;
A rainbow, the sun, a river, a mist;
A reptile, a pigeon, an insect, a mammal;
Water pollution, air pollution, nuclear pollution, environment pollution.

environment means simply what is around us.
The Arctic ocean,

especially, has suffered from nuclear pollution.
Britain alone dumps 250 000 tons of industrial waste into the North Sea.
Normally the ozone layer in the atmosphere protects us from radiation.
Nuclear power stations can go wrong and cause deforestation.
Both clean air and clean water are necessary for our health.

ancient times people admitted that their health depended on

the state of surroundings. But only in XX century they realized , that many diseases are closely connected with the air and water pollution .

because polluted air can cause illnesses and even death..

factor of existing life in our planet.
People use fresh

water for their needs. It is more than 2% of hydrosphere volume.
First of all water pollution is the result of industrial, agricultural and everyday necessities discharge of wastes into rivers, lakes and seas.
The main part of water pollution plays a large number of oil industry wastes.

smoke get into the air and make it …….

.
Air pollution is very harmful for humans, …….. and plants.
Effects on human. It causes ……
It causes damage to ….., vegetables, fruits and ……
We should …….to keep the air clean.