7821
The species specific effects on algal growth have ecological implications of potential selective inhibition of chlorophytes by metolachlor herbicide .
 Chemical: metolachlor
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: metolachlor 
Answer:
 Chemical: metolachlor