Answer:
A. star formation begins in a nebula.
Explanation:
Combine the number of its Protons and Neutrons and you will have its atomic mass.
You multiply the number of atoms by 12 to get how many electrons (since each atom has 12 electrons in it)
you multiply the number of atoms by 13 to get how many neutrons
(since each atom of this isotope has 13 neutrons in it)
The answer is B . Brønsted-Lowry Acid/bases trade H+
A. How religion and philosophy different
All the other choices (b-d) can be explained by science while a can be explain by history I think