Ключевые слова: april yellow, arrow, background, begin, beginning, challenge, colorant, development, direction, earth day, ecology, energy, energy saving, environment, forward, future, garden, goal, green, growth, improvement, park, pigments, plan, plant, planting, planting trees, pollution, protect, protect animals, protect trees, recycle, reduce, resins, reuse, runway, save, saving, solvents, start, text, tree, way, word, world,