Ключевые слова: aid, atlas, big blue marble, class globe, conservation, continents, control, countries, earth, earth friendly, ecological, ecology, education, geography, global, global warming, globe, green, green friendly, greenhouse gas, greenhouse gasses, hemisphere, learn, learning tool, map, map of the world, northern hemisphere, oceans, ozone layer, planet, pollution, pollution control, save the earth, save the planet, school, school globe, sick, sick world, southern hemisphere, stethoscope, visual, visual aid, visual learning aid, warming, world, world globe, world health, world health organization, world map, wto,