What might occur if another species of paramecium that feeds on the same species of yeast is introduced into the culture? A. Competition between the two species of paramecia
B. symbiosis is between the two species of paramecia
C. an increase in the reproductive rate of the yeast
D. an increase in oxygen production by the yeast

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.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

catya that's not even a b or c