Identify and describe layer B in the figure above.

theres no figure??

Explanation:

Explanation:

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The hydrosphere is all of the water on Earth's surface. Identify and describe layer B in the figure above. Layer B is the mesosphere. It is the middle layer of the atmosphere and also the coldest.

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.