Which statement describes the high and low pressure systems and their affect on global climate?
High pressure systems bring storms; low pressure systems bring sunny and fair
weather.
Cold air from the poles create high pressure systems. Warm air at the equator
creates low pressure systems.
High and low pressure systems do not affect the global climate.
High pressure systems bring colder temperatures from the north and south poles
resulting in precipitation.

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.