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In______________sampling,the researcher interviews a few individuals who possess a certain characteristic;these interviewees are then asked to supply the names of others with the same characteristic.This process continues until the sample is an acceptable size and no new information of any significance is being gained.
Monocline
A geological fold in which all layers are inclined in the same direction.
Dome
A geological feature where rock layers are pushed upwards to form a rounded protrusion on Earth's surface.
Anticline
A type of fold that is arched upward and has its oldest beds at its core, often associated with oil and gas reservoirs.
Syncline
A fold in rock layers that dips downwards, where the youngest layers are at the core of the fold.
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