Ключевые слова: antique, autumn, back, background, behaviour, bright, carbon, carbon reduction, change, clock, co2, concept, conservation, day, earth, ecoactivism, ecofriendly, ecology, ecosystem, electric, emissions, energy, environment, environmental, fall, fossil fuel, future, global, globe, green, hour, important, leaf, life, nature, planet, pollution, power, save, season, spring, summer, sustainable, symbol, tree, vintage, world, wwf,