in practice - in reality, in progress - happening now, in the long term - for a long period of time, in the meantime - while something else is happening, industrial waste - litter or substance from factories that pollutes the environment, mild - not cold not hot weather, mist - thin fog produced by drops of water, play a part - to help to achieve something, poisonous - very harmful, causing illnesses and death, process - to prepare food as a part of industrial operation, regulation - official rule, severe - very serious, a shelter - a building for protection, solar power - electricity produced by sun energy, substance - a material, substitute - to use one thing instead of the other,

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