46803
A " glacial refugium " ( " plural refugia " ) is a geographic region which made possible the survival of flora and fauna in times of ice ages and allowed for post-glacial re-colonization .
 flora, fauna
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 flora, fauna