In solid conductors, what is responsible for the flow of electrical current??​

In metal conductors, the metal ions are metallically bonded. This means that the lattice of positive ions is surrounded by a sea of delocalised electrons which are free to move and therefore conduct electricity.

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Ussually, soft metals. or solid objects that allow the flow of eletrons.

Explanation:

Electric Current is the flow of electrons through a wire or solution. In a solid the electrons are passed from one positively charged metallic atom to next but in solution the electron is carried by the ions present in the solution. A solution capable of carrying charge is called an electrolyte.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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c. magnitude and direction