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KB Term:
Sigma KEE - Reef
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Reef
A
Reef
is a ridge of rock, coral, or sand at or near the surface of a
WaterArea
.
Relationships
Parents
LandForm
A
LandForm
is the class of geographically and/or geologically distinct areas that occur on Earth's surface, including mountains, hills, plains, valleys, deltas, and features of submerged land areas such as the ocean floor.
Children
CoralReef
CoralReef
is the subclass of
Reef
s that are formed from living organisms that produce the limestone formations of the reef. Coral reefs include fringing reefs, barrier reefs, and
Atoll
s.
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Sigma version 3.0 is
open source software
produced by
Articulate Software
and its partners