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True
the rings originally represented the five continents at that time, and the color represented those five contients competing.
The light colour is because the wood is less dense - this means that the plant was growing/ expanding quickly, which occurs during spring and summer. The darker bands are dense growth which is characteristic of growth during the cooler or winter months. Because active growth is much faster the (summer) lighter coloured rings are normally larger than the darker (winter) rings.
If this question correlates to the rings in the olympic flag then the answer is that no ring represents the US. The rings represents continents rather than countries. The american continents are represented by the red ring.
Annual growth rings are commonly studied in trees.
annual rings
the annual growth rings
A clams growth rings can be, tan, gold, brown, even red.
Yes, eventually platinum will tarish to a light gray/silver color, sometimes darker especially if you swim a lot with it on. most jewlers will clean rings for free and it will look new again.
Palms do not show growth rings.
The rings on a clam show where the growth of one year ends. Basically you can count the rings to see how old the clam is just like a tree! Each ring shows the growth of that year.
Tree growth rings (and some other kinds like those of shells) are caused by the difference in growth during the different seasons: autumn and winter less growth, spring & summer more growth.