Across
1
Tectonic landmass section
3
Unit of electric potential
5
Glass that splits light into spectrum
6
Mass per unit volume
7
Our home planet
8
Molten rock beneath Earth surface
11
Gas essential for breathing
Down
2
Element found in all living things
4
Tissue that contracts for movement
7
Biological catalyst
9
Gas form of a liquid
10
Naturally occurring inorganic solid