Across
1
Unit of power
3
Curved glass that refracts light
5
Gas form of a liquid
6
Icy body with a tail near the sun
7
Molten rock beneath Earth surface
8
Unit of heredity
10
Group of similar cells
Down
2
The Red Planet
4
Naturally occurring inorganic solid
5
Unit of electric potential
9
Tissue that contracts for movement
11
Reddish electrical conductor