How are earthquakes related to the Earth’s moving plate tectonics? A
The boundaries between the plates grind against each other, producing most earthquakes.
B
Earthquakes occur in the lithosphere, because this is where moving plate tectonics are located.
C
The ocean ridges are the asthenosphere spreading centers, creating new oceanic crust and earthquakes.
D
The movement of the plate tectonics and magma pushing up through the cracks in the plates cause earthquakes.

c

Explanation:

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i believe the answer is 5,000

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.