Ключевые слова: biodegradable, boy, child, collect, concept, contamination, disposable, earth, ecological, ecology, environment, fastfood, filthy, fun, garbage, garden, green, healthy, household, joy, kid, lifestyle, material, nature, nutrient, objects, organic, planet, plant, plastic, play, playing, polystyrene, recyclable, recycle, recycled, recycling, refreshment, save, sign, soda, toy, trash, unhygienic, used, waste, water,