Ключевые слова: background, care, change, clean, concept, conservation, contamination, cubes, damage, debris, dice, dirty, earth, eco, ecology, ecosystem, energy, environment, environmental, garbage, german, germany, global, green, industry, litter, message, natural, nature, ocean, planet, plans, plastic, polluted, pollution, problem, protect, protection, recycling, signed, sustainability, sustainable, symbol, text, trash, waste, water, word, words, world,