- In the beginning of his study, the scientist expected that the air in the Arctic would be pristine. What was the basis for his assumption?
- How can you explain the presence of tiny particles in the air around an industrial city, for example, Detroit? How can you explain the presence of tiny particles in the Alaskan air, far from sources of pollution?
- Why does the pollution remain in the air so long in the Arctic?
- Do you agree or disagree with the idea that plants, animals, land, water, and air are part of a whole living organism? Explain your answer.
- Why should we be concerned about environmental degradation in other parts of the world?
