179937
Once introduced , dung beetles in Australia were studied in order to determine their effects on : Care had to be taken to introduce only those species that would be most compatible with the Australian climates and soil types , that were not under great threat of predation or of themselves becoming pests , and that effectively dispersed dung pads within an ideal time frame of 48 hours so as to minimise successful fly and worm breeding by disrupting their reproductive cycles .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
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