D, Neon and argon are both noble gases and contain almost the same elements.
Answer:
Multicellular organisms are organisms that consist of more than one cell, in contrast to unicellular organisms. All species of animals, land plants and most fungi are multicellular, as are many algae, whereas a few organisms are partially uni- and partially multicellular, like slime molds and social amoebae such as the genus Dictyostelium.
Explanation: Google
We no longer use atoms of the same elements are identical in size, mass and properties.
