"Aardvarks eat them" can be substituted with alternative phrases to express the same meaning, such as "aardvarks dine on them," "aardvarks consume them," or "aardvarks feast on them." Other options include "aardvarks devour them" and "aardvarks chow down on them." Each of these phrases conveys the idea that aardvarks eat this particular food source. The use of synonyms in writing can help to vary sentence structure and make the text more interesting to read. Furthermore, using varied language can enhance the clarity and effectiveness of communication.