18485
The present study combines short - term experiments with food chain modeling to explore the long - term effects of the herbicide atrazine on consumer - resource dynamics in a marine intertidal ecosystem .
 Chemical: atrazine
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: atrazine