Ryan and his family are visiting a theme park and he wants to ride a roller coaster. At which
point in the diagram would he expect to have the greatest amount of potential energy?

Higher objects (with further to fall) have greater potential energy. therefore the maximum height would have the highest amount of potential energy

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.