4936
Earthworms were sensitive to fresh SAB , with significant avoidance at 181 mg / kg ; acute 14 - d survival median lethal concentration ( LC50 ) of 103 mg / kg for low carbon soil ; and juvenile production median effective concentration ( EC50 ) of 317 mg / kg for high carbon soil .
 Chemical: carbon; Chemical: carbon
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: carbon; Chemical: carbon