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The path of sound waves through the outer, middle, and inner ear.
Darwin observed that tortoises on islands that are arid tend to have saddle-shaped shells, allowing
This red gasoline container holds about 30 gallons of gasoline and is used to fill vehicles used ...
A typical air vane sensor with the cover removed. The movable arm contacts a carbon resistance path ...
The path of the conveyor is complex and affected by deep ocean topography
The political path toward success may seem impenetrable