Ключевые слова: background, blue, change, clean, climate, concept, day, death, desert, disaster, drought, dry, earth, eco, ecology, energy, environment, environmental, environmental protection, field, fresh green, global, global warming, globe, grass, green, hand, heat, hope, landscape, life, natural, nature, planet, plant, pollution, protect, protection, recycle, reuse, save, sky, sun, sustainability, sustainable, tree, warming, weather, world,