Environmental is related to Weather. Weather is related to Temperature. Heat is a type of Temperature. 
Accounting is a type of Register. Accounting is a type of System. System is a synonym of Composition. Composition is a synonym of Constitution. 
Environmental <--RelatedTo--> Weather <--RelatedTo--> Temperature <--IsA-- Heat 
Register <--IsA-- Accounting --IsA--> System <--Synonym--> Composition <--Synonym--> Constitution 