How Do Humans Depend on Earth My Science Library 45
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Nature, effect of human beings onEarth (planet), juvenile literatureConservation of natural resourcesConservation of natural resources, juvenile literatureJuvenile literatureEffect of human beings onEnvironmental responsibilityOuvrages pour la jeunesseEffets de l'homme surResponsabilité environnementaleConservation des ressources naturellesJUVENILE NONFICTION