Ключевые слова: africa, america, background, ball, business, care, cartography, change, climate, communication, concept, conservation, continent, countries, country, crystal, earth, eco, ecology, environment, environmental, environmental conservation, europe, geography, glass, global, global business, globe, green, international, isolated, land, map, marble, north, planet, pole, pollution, protection, reflection, renewable energy, sphere, surface, sustainable development, symbol, transparent, travel, warming, world, worldwide,