Use what you know about relative dating to choose the correct answers from the drop-down menus. ethan determines that layer b is 3.5 million years old. due to the , he can estimate that layer a is years old.

2b2t

explanation:

2b2t

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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