Ecological is related to Reduce. Reduce is related to Action. Action is related to Adopt. Adopt is related to Theme. 
Fact is a different concept from Theory. Theory is related to Math. 
Ecological <--RelatedTo--> Reduce <--RelatedTo--> Action <--RelatedTo--> Adopt <--RelatedTo--> Theme 
Fact <--DistinctFrom--> Theory <--RelatedTo--> Math 