Ключевые слова: adjust, air, america, arizona, atmosphere, away, beautiful, breathe, burning, chemical, clean, coal, contaminated, country, danger, destroy, destruction, disease, energy, environment, environmental, female, fossil, fuel, going, landscape, leaving, life, mask, navajo, necessity, oxygen, plant, polluted, pollution, poor, power, problems, quality, red, regulation, sadness, sick, stacks, toxic, view, walking, woman,