Formed in the same way as the "high islands" but did so longer ago and have thus eroded to a much greater degree.

A. Eroded volcanic islands
B. Promontories
C. Atolls
D. Headlands



Answer :

Final answer:

Atolls are circular islands formed from eroded volcanic islands over time, leaving a central lagoon. This erosion process leads to the transformation of high islands into low islands and eventually atolls.


Explanation:

Atolls are circular or semi-circular islands formed from eroded volcanic islands that have mostly disappeared, leaving a central lagoon where the volcano used to be. These atolls are a result of long-term erosion of volcanic islands, such as the older volcanoes of the Hawaiian/Emperor seamounts. The process of erosion over thousands of years leads to the transformation of high islands into low islands, which can eventually become atolls.


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