7968
The aim of this study was to determine the ecotoxicity of differently aged TDFs by investigating earthworm ( Eisenia andrei ) responses viz . growth , reproduction , neutral red retention times ( NRRT ) and tissue metal concentrations .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None