Ключевые слова: aluminum, bin, brown, canned, cardboard, cares, cheerful, class, conservation, consumerism, container, dog, echo, ecology, education, empty, energy, enjoyment, environment, environmental, friendship, garbage, help, junk, leisure, litter, material, metal, other keywords, outside, paper, pollution, recreation, recyclable, recycle, recycling, reduce, relaxation, reusable, reuse, rough, save, savings, scrap, sustainable, team work, trash, use, useful, waste,