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Forests that cover about 30% of the U.S.land area provide habitats for ____________________% of the country's wildlife species.
Crank
To rotate an engine with the objective of starting it.
Digital Multimeter (DMM)
An electronic measuring instrument that combines multiple measurement functions in one unit.
Transistors
Semiconductor devices used to amplify or switch electronic signals and electrical power.
Photodiode
A semiconductor device that converts light into electrical current, commonly used in optical communication systems and light sensing.
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