Record the average height data for all quadrats in Table F of your Student Guide, Day 1
End of Week 3
Type of
Plant
Nutrients
Added
No
Nutrients
Nutrients
Added
No
Nutrients
Grass
5.1 cm
5.1 cm
10.8 cm
9.5 cm
12.2 cm
10.8 cm
Sunflower
Birch Tree
7.4 cm
5.9 cm
M

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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.