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Fatty acids are the fundamental structural components of membrane lipids , and the degree of saturation of the long hydrocarbon chains in microalgae contributes to regulation of growth , biomass production and reproduction of aquatic consumers .
 Chemical: Fatty acids; Chemical: hydrocarbon
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: Fatty acids; Chemical: hydrocarbon