I want to know the answer to the following question:
In diffuse-porous woods, if the demarcation between rings is obvious, what type of difference within the ring might not be?
All the background I'm provided with is that "In the diffuse-porous woods, the demarcation between rings is not always so clear and in some cases is almost (if not entirely) invisible to the unaided eye.". Is that enough to answer the question?