Ключевые слова: adjusting, alternative, care, concept, conservation, consumption, control, development, ecological, effective, efficiency, energy consumption, energy efficiency, environment, environmental, idea, inefficient, limit, maintenance, misuse, preservation, pressure, protect, quality, recycle, reduce, regulator, repair, resources, responsibility, restrict, reuse, safety, save, spending, supply, sustainable, system, waste, water circulation, water supply,