Ключевые слова: blue, care, clay, concept, day, earth, earth day, eco, ecology, environment, environmental, global, globalization, globe, green, hand, hold, hope, human, international, isolated, land, map, model, modeling clay, nature, ocean, peace, people, person, planet, plasticine, pollution, protect, protection, renewal, save, senior, sign, solar, space, sphere, symbol, system, toy, warming, water, weed, white, world,