Our land is full of beautiful flowers, plants, trees which grow and blossom in the meadows, on the banks of rivers and lakes, in the forests and in our gardens.

Many flowers became rare and vanish. Our useful insects: bees, bumble- bees, dragonflies, grasshoppers cant live in the atmosphere of chemical and pesticides. Many birds and fishes die because of the polluted air and water.

The next important problem is air pollution. Excessive radiation and transport, factories and plants are harmful to people and animals. It also destroys the ozone layer which protects the Earth from the dangerous light of the Sun.

Another problem is that forest are dying from acid rain. Very often industry is developing without any care of the environment. The intensive development of sciences, industry and chemistry in the 20 th has made the pollution of our environment a global problem which should be solved be all means. Thats why students and teachers must take part in controlling and protect nature.

So, lets speak about the problems of ecology.