Pollution: Pollution of air, water and soil require millions of years to recoup. Industry and motor vehicle exhaust are the number one pollutants. Heavy metals, nitrates and plastic are toxins responsible for pollution. While water pollution is caused by oil spill, acid rain, urban runoff; air pollution is caused by various gases and toxins released by industries and factories and combustion of fossil fuels; soil pollution is majorly caused by industrial waste that deprives soil from essential nutrients.

The most important issue facing the environment today is air pollution. All of us realize that we can't survive if we can't breathe. The polluted air makes us breath harder than the past. When our grandparents were kid, they saw a fresh sky and breathe without the mask. Nowaday, the air is so polluted and the sky is almost very dark. In addition, the polluting and harmful gases which waste from the factories destroy the natural environment strictly. These gases make many acid rains to destroy our nature. Even so, we need to save the Earth immediately. 

Chúc bạn học tốt !