Which of these is a benefit of fish farming? A. It can deplete native fish populations

B. It can restock lakes depleted by recreational fishing

C. It can pollute natural bodies of water

D. It can pass diseases to native fish populations

The answer to this would be B

the organisms are not adapted to live in some communities or habitats.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.