6.6 billion people live in our world. Environment provides what people need but people harm it. People pollute the earth. There are two main causes of pollution such as factory wastes and chemical gases.
First cause is factory wastes. Factories pollute both the air and the water. Lots of factories do not use fitler. Their toxic gases mix into the air. Not only gases but also their wastes pollute the water. Poison wastes pour into river. Lots of farmer use that dirty water to raise plants or some people drink that water. Factory management have to be sensitive about the public health and the environment.
Secod cause is chemical gases. There are lots of car in big cities. Cars pollute the air. Due to exhaust gases. There are lots of toxic gases in exhaust. Not only exhaust gases but also parfumes gases damage the atmosphere. Chemical gases mix into the air and people breathe fresh air more than enough.
Having looked at the causes of pollution, let us now look at two main effects such as acid rains and extinvt animals.
First effect is acid rains. Due to the fact that chemical gases in the atmosphere cause the acid and it rains with snow. Acid rains damage plants, lands, buildings, statuaries and water. For example; people eat the plants that are watered with acid rains and then people get sick because of that chemical.
Second effect is extinct animals. People damage the environment. Global warming takes effect day by day. If glaciers in polars melt, animals in which live in polars become extinct. Other animls can not be adaptation global warming and they can not survive.
In coclusion, factory wastes and chemical gases are the causes and acid rains and extinct animals are the effects of pollution. In my opinion people have to be sensitive more than. Because one day our world will become a place that nobody can live.