Экология

obal warming, but the scourge of dirty drinking water. It kills 2. 2 million a year in developing countries. Most victims are children.
Read the text and analyze it. Find on table the problems that are lit in the text.

Air pollution
Nobody and nothing on the Earth could live without air. About 150 years ago the air was pure and clean. Then people started building factories and many of the things they make, like cars, put a lot of harmful gases into the air. Today the air is so polluted in some places that its not always safe to breathe there. Many cities around the world have air polluted with "smog". This is so strong in some places that the air, which should be a beautiful blue, looks brown. These emis - sions have consequences for mans health, weakening the im - mune system of people.
Polluted air is not only bad for people and animals, but also for trees and plants. And in some places its even damaging farmers crops - the food we eat. A great number of trees growing on the planet produce oxygen and clean the air. But vast forests are cut and burn in fire. Their disappearance upset the oxygen balance.
Up in the sky, above the air we breathe, theres a layer of gas called ozone. It helps us by blocking out the sun rays that can harm our skin, and by letting the rays that are good for us come through. We are lucky to have this roof. But now, because of the air pollution, the ozone layer is destroyed. The dangerous rays get through the atmosphere, causing different diseases.






Read the text and analyze it. Find on table the problems that are lit in the text.

Air pollution
Nobody and nothing on the Earth could live without air. About 150 years ago the air was pure and clean. Then peop