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  2. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools .

  3. Clean Water Act - Wikipedia

    en.wikipedia.org/wiki/Clean_water_act

    The Clean Water Act ( CWA) is the primary federal law in the United States governing water pollution. Its objective is to restore and maintain the chemical, physical, and biological integrity of the nation's waters; recognizing the responsibilities of the states in addressing pollution and providing assistance to states to do so, including ...

  4. Zero coupon swap - Wikipedia

    en.wikipedia.org/wiki/Zero_coupon_swap

    General description. A zero coupon swap (ZCS) [1] is a derivative contract made between two parties with terms defining two 'legs' upon which each party either makes or receives payments. One leg is the traditional fixed leg, whose cashflows are determined at the outset, usually defined by an agreed fixed rate of interest.

  5. 20 of the very best mother of the bride gifts for the ... - AOL

    www.aol.com/lifestyle/best-mother-of-the-bride...

    Personalized Mother Of The Bride Robe. From $15 at Etsy. Family Birthstone Necklace. From $31 at Etsy. Mother Of The Bride Canvas Tote Bag. $23 at Etsy. See 15 more. The mother of the bride is ...

  6. Butterworth filter - Wikipedia

    en.wikipedia.org/wiki/Butterworth_filter

    The Butterworth filter is a type of signal processing filter designed to have a frequency response that is as flat as possible in the passband. It is also referred to as a maximally flat magnitude filter. It was first described in 1930 by the British engineer and physicist Stephen Butterworth in his paper entitled "On the Theory of Filter ...

  7. Zero waste - Wikipedia

    en.wikipedia.org/wiki/Zero_waste

    Zero waste. Zero waste, or waste minimization, is a set of principles focused on waste prevention that encourages redesigning resource life cycles so that all products are repurposed (i.e. “up-cycled”) and/or reused. The goal of the movement is to avoid sending trash to landfills, incinerators, oceans, or any other part of the environment.

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