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habitat - n. the place or type of place where a plant or animal naturally or normally lives or grows
contamination - n. to make (something) dangerous, dirty, or impure by adding something harmful or undesirable to it
conversion - n. the act or process of changing from one form, state, etc., to another
pesticide - n. a chemical that is used to kill animals or insects that damage plants or crops
mismanage - v. to manage something badly
reclassify - v. to reorganize something
