List the names of the elements that make up the molecule?

i nitrogen, oxygen, hydrogen

Explanation: " Molecules of most elements are made up of only one of atom of that element" well if you search it up

You didn't really mention which molecule.But all molecules are made of atoms. They can be monatomic, diatomic, triatomic ,tetra-atomic or polyatomic. I hope this helps you :)

Explanation:

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.