Across
1
Preserved remains of ancient life
2
Solid with repeating atomic pattern
5
Second lightest element
9
Natural satellite of Earth
10
Gas form of a liquid
Down
1
Push or pull on an object
2
Basic unit of life
3
Substance with pH above 7
4
Unit of power
5
Form of thermal energy
6
Biological catalyst
7
Tissue that contracts for movement
8
Nerve cell in the brain