Across
1
Center of an atom or cell
4
Unit of power
6
The Red Planet
7
Second lightest element
8
Magnetic metallic element
Down
2
Precious yellow metallic element
3
Group of similar cells
5
Mass per unit volume
6
Tissue that contracts for movement
Center of an atom or cell
Unit of power
The Red Planet
Second lightest element
Magnetic metallic element
Precious yellow metallic element
Group of similar cells
Mass per unit volume
Tissue that contracts for movement