Answer:
Letters
Explanation:
For example, today we use the periodic table which is full of elements named with 1 or 2 letters. Like how Helium is He and Sodium is Na. Hope this helps!!!
<span>are
in random, constant, straight-line motion</span>
<span>
</span>
<span>your welcome :)</span>
<span>all I Ask is for a thank u peaceeee</span>
I will need a picture if the periodic table