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sophisticated


advanced or complex

Pilots spend many hours learning to read all the sophisticated instruments on airplanes.

sophisticated

elusive


hard to find or catch

After hours of searching, the scientists finally spotted the elusive panda hidden among the trees.

elusive

simulate


to re-create an event or a process, often using a computer

The creators of the movie wanted to simulate what life was like when dinosaurs roamed the Earth.

simulate

hypothesis


an educated guess about the answer to a research question

Many experts share the hypothesis that the Chauvet Cave paintings in France are about 30,000 years old.

hypothesis

segregation


the practice of keeping groups apart, often because of race

Until 1954, segregation by race in public schools was legal in the United States.

segregation
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