Which of the following is the best definition of a scientific theory? A. A broad, well-supported explanation of related observations or events.

B. A plausible answer to a scientific question that is used to guide research.

C. A highly tentative statement about the natural world that is likely to be significantly changed or discarded.

D. A description of a natural phenomenon that is always observed to occur under specific conditions.

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

mark as brainlest

gokuson

bc blah

explanation:

bc blah

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.