What are these tissues (30 points, plz answer) -Skin, lining of organs, glands
-brain, spinal cord
-cartilage, blood, bone, fat
-heart, muscles, organs

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.

if it's not useful, feel free to report for mistake in answer.

a clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. when the sun sets we see red and orange colors because the blue light has scattered and away of the sight of

explanation: