A university study suggests that up to 40% of the world's premature deaths are caused by

In many developing countries people use _______ contaminated by hazardous waste and sewage.

_______ regions are often contaminated with air pollution.

What do open windows and fans that extract smoke provide?

The article implies that most of China's air pollution is caused by

According to the article, where is cancer the leading cause of death?

Which is NOT mentioned as a source of soil pollution?

Soil pollution is a major concern in _______ countries.

Industrial metals and pesticides seep into the earth's soil and contaminate our

Premature deaths caused by pollution are expected to increase as more people move to