A good scientific answer doesn't dissolve the question. It finds a layer underneath it — relocates the mystery somewhere more tractable — and makes clear what it has and has not explained. The new question is better than the original one when it sits at a level where real work can happen.
These three chains are compact models, not final descents. Each asks why something is the case, takes one useful answer seriously, and notices the question it opens. Follow a chain to its present floor.