Ключевые слова: abominate, bacterium, biomass, bottle, clean, container, contamination, decline, dirt, dirty, disdain, ecology, engineering, environment, environmental, excremental, excretion, factory, filth, filthy, foul, garbage, global, industry, nasty, nature, outdoor, pet, plant, plastic, pollute, polluted, pollution, processing, protection, purity, recycle, recycling, reduce, reflection, refuse, repulsive, river, rubbish, trash, unhygienic, warming, waste, waste water, wastewater,