During photosynthesis, light energy from the Sun causes a reaction to take place. The products of photosynthesis are used in a reaction during the process of cellular respiration, which provides energy for cell processes. Identify which reaction absorbs energy and which reaction releases energy.

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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