Across
1
Basic unit of life
3
Hottest planet in solar system
7
Tectonic landmass section
8
Nerve cell in the brain
10
Magnetic metallic element
12
Molten rock beneath Earth surface
Down
2
Tissue that contracts for movement
4
Solid with repeating atomic pattern
5
Amplified beam of light
6
Form of thermal energy
9
Gas essential for breathing
11
Element found in all living things