Ключевые слова: air pollution, at hand, blackboard, carbon, carbon dioxide, carbon recycling, carbonneutral, chalk, character, chart, children, co2, concept, decarbonization society, decrease, down, draw, eco, ecology, emissions, energysaving, environment, environmental issues, global warming, go down, goal, greenhouse gas, hand, image, japan, japanese people, lower, measures, pollution, pollution problems, reduce co2 emissions, reduce the, reduction, reduction of carbon dioxide, start, word,