3516
The change degree of UV - B radiation at the high level ( 0 . 45 W m ( - 2 ) ) was higher than that of UV - B radiation at the low level ( 0 . 15 W m ( - 2 ) ) .
 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