6872
Groups were acclimated for 3 - 32 weeks in either their respective native salinity ( 3 . 0 ppt --> 3 . 0 ppt and 24 . 0 ppt --> 24 . 0 ppt ) , or the average of the salinities of the two collection sites ( 3 . 0 ppt --> 13 . 5 ppt and 24 . 0 ppt --> 13 . 5 ppt ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None