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treacherous – adj. very dangerous and difficult to deal with
pill – n. a small medicinal or dietary preparation
certification – n. official approval of something
sustainability – n. the ability of some product or resource to be used over a long period of time without being used up
precautionary – adj. something that is done to prevent possible harm in the future
income – n. earnings
custody – n. the legal right to take care of the child
