Samples of Sources
Global Issues Nature
Global Issues Nature
Below are a few samples from the source, National Ocean Service.
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National Ocean Service 2 items
What is a barrier island?
Barrier islands form as waves repeatedly deposit sediment parallel to the shoreline. As wind and waves shift according to weather patterns and local geographic features, these islands constantly move, erode, and grow.
269 days ago

How long do Greenland sharks live?
Scientists have suspected for a while that Greenland sharks lived extremely long lives, but they didn't have a way to determine how long. The age of other shark species can be estimated by counting growth bands on fin spines or on the shark's vertebrae, much like rings on a tree.
273 days ago