It's these two numbers, 20 and 13, that are used to make up the Tzolk'in calendar, the first calendar used by the Mayans. 1  1. 2  2. 3  3. 4  4. â¦. 5  5. 6.  NEXT.
Making the world better, one answer at a time. the nucleus is made up ofneutrons and protons. on the outside of the nucleus is the electrons. the nucleus is made up ofneutrons and protons. <br/>on the outside of the nucleus is the electrons.
That's what little girls are made of. You state : So atoms are formed from protons and neutrons, which are formed from quarks. and ask: But where do these quarks come from? What makes them? How do we know atoms are formed from protons and neutrons?