If element "x" is heavier than element "y" question 4 options: a.) element "x" must be a metal. b.) then element "x" must be on the right side of the periodic table. c.) element "x" must have more particles in the nucleus than element "y." d.) element "x" must have a higher melting point than element "y."

The best answer would be C. 

The mass of an element depends on the number of particles found in the nucleus of the atom. Atomic mass can be computed by adding the number of protons and the number of neutrons. Protons and neutrons are found in the nucleus of an atom. So the answer must be letter C. 

It is a prairie region, much like the Black Belt. While the Jackson Prairie has more trees and soil that is not as rich as the Black Belt, it is still good for growing crops, raising cattle and growing pine trees.