In the last 50 years, air pollution problems have become more serious due to

Question

Quizplus · Accepted Answer

All of the above are correct. The scale of airborne emissions has increased due to industrialization and an increase in vehicles, causing higher levels of pollutants. Additionally, there is a wider variety of airborne emissions due to the use of different chemicals and fuels. Finally, the damages caused by these emissions have become more diverse and complex, affecting not only the environment, but also human health and the economy.

In the Last 50 Years, Air Pollution Problems Have Become