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Why have logographic writing and emoticons become so prevalent in English texting?
Abyssal Plane
A flat, almost level area of the deep ocean floor, usually lying at depths between 3,000 and 6,000 meters.
Seismic-Reflection Profiling
A geophysical method used to explore subsurface structures by sending sound waves into the ground and analyzing the reflected waves to map geological features.
Seismic-Reflection Profile
A cross section plotting data gathered from a seismic-reflection survey.
Continental Shelf
The extended perimeter of each continent, which is submerged under relatively shallow sea before dropping into the deep ocean.
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