Composition is a type of Mixture. Concentrate is a type of Mixture. you would Study because Concentrate. Study is related to Biology. 
Trap is a type of Device. Trigger is a type of Device. Trigger entails/necessarily involves Fire. Fire is a type of Bake. 
Composition --IsA--> Mixture <--IsA-- Concentrate <--MotivatedByGoal-- Study <--RelatedTo--> Biology 
Trap --IsA--> Device <--IsA-- Trigger --Entails--> Fire --IsA--> Bake 