Un libro in lingua di Helen Orme edito da Bearport Pub Co Inc, 2008

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Pollution poses a major threat to human health and wildlife. What are the sources of the problem, and how can we keep harmful substances out of the natural environment? Pollution pairs clear, easy-to-read text with vibrant photos to engage kids as they explore ways to reduce and prevent the destructive effects of pollution in water, land, and air. A section in the back of the book will inspire young environmentalists by suggesting ways they can help protect their planet.

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