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alternatywne źródła energii start learning
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alternative energy sources
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bezpieczny dla powłoki ozonowej start learning
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wymierać, wyginąć (o gatunku) start learning
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kupować produkty ekologiczne start learning
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buy environmentally friendly products
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być przyjazny dla środowiska start learning
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wytwarzać dwutlenek węgla start learning
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chronić środowisko naturalne start learning
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