Ключевые слова: air, bio, calculate, carbon, certificate, clean, climate, co2, combustion, compensation, concept, decrease, dioxide, eco, emission, energy, environment, environmental, exhaust, factory, footprint, free, friendly, fuel, future, gas, green, greenhouse, icon, illustration, label, logo, nature, neutral, pollution, power, recycle, reduce, reduction, rubber, safe, save, seal, sign, stamp, sticker, sustainable, symbol, zero,