Which of these statements best explains how fossil records provide evidence to the scientific theory of evolution?
a. they show how natural selection happened on earth by chance.
b. they show how organisms choose to adapt to changing earth conditions.
c. they prove that structure and location of remains of organisms depict past events.
d. they prove that natural selection always leads to greater complexity in organisms.
z

i think it is true since you can test the answer and can use observations to complete it.

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.