Across
1
Solid with repeating atomic pattern
6
Nerve cell in the brain
7
Gas essential for breathing
8
Tectonic landmass section
9
Disturbance that transfers energy
Down
2
Hottest planet in solar system
3
Group of similar cells
4
Tissue that contracts for movement
5
Preserved remains of ancient life
10
Biological catalyst
11
Molten rock beneath Earth surface