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tier – n. a row or layer of things that is above another row or layer
folks – n. plural, unofficial term for people in general
hydroponic – adj. a method of growing plants in water
artificial – adj. not natural or real; made, produced, or done to seem like something natural
online – adj. connected to or served by a computer or telecommunication system
automated – adj. to run or operate by using machines or computers, instead of people to do the work
algae bloom – n. a sudden increase of algae population in water, sometimes harmful to humans, marine or freshwater environments
practical - adj. relating to what is real as opposed to what is possible or imagined
urban – adj. of or related to a city
