96798
This task , while fundamental , is highly daunting , since only an estimated ten percent of the world ’s species are believed to have been characterized as of 2006 , most of these unknowns being fungi , invertebrate animals , micro-organisms and plants .
 invertebrate
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:
 invertebrate