Across
1
Solid with repeating atomic pattern
5
Tissue that contracts for movement
6
Gas essential for breathing
7
Tectonic landmass section
12
Basic unit of life
Down
2
Disturbance that transfers energy
3
Magnetic metallic element
4
Blocking of light by a celestial body
8
Substance with pH above 7
9
Icy body with a tail near the sun
10
Unit of power
11
Element found in all living things