Use the food web below to answer the following question. Mountain Lion
Snice
Du
Rabb
Caterpi
What role does the grass play in the food web?
O Producer
O Primary Consumer
o Secondary Consumer
Decomposer

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.