boot up - start up a computer, groceries - food you buy at a supermarket or similar store, reusable - you can use it again, tap water - water that comes out of a pipe in the home, trash can - place for throwing away garbage, crank up - to turn something up higher, tank - a place to store water, conserve - to save or use less of something, consumption - the act of using something , organic - referring to food produced naturally without chemicals or pesticides, pesticides - materials used to kill insects and other things that harm plants, source - the origin of something; where it comes from, air conditioner - something in a home or other building that is used to control the temperature,

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