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.
All matter is made up of atoms, earning it the name the building block of matter. While atoms are the smallest part to possess the element's characteristics, atoms are made up of smaller parts called electrons, neutrons and protons. Protons carry a positive charge, while electrons carry a negative one. Neutrons are neutral.