Across
1
Preserved remains of ancient life
4
Blocking of light by a celestial body
6
Element found in all living things
8
Unit of heredity
9
Form of thermal energy
Down
1
Push or pull on an object
2
Solid with repeating atomic pattern
3
Second lightest element
5
Tectonic landmass section
7
Group of similar cells
10
Mass per unit volume
11
Tissue that contracts for movement