Across
1
Biological catalyst
3
The Red Planet
4
Gas form of a liquid
5
Second lightest element
Down
1
Our home planet
2
Glass that splits light into spectrum
6
Element found in all living things
7
Compound containing oxygen
Biological catalyst
The Red Planet
Gas form of a liquid
Second lightest element
Our home planet
Glass that splits light into spectrum
Element found in all living things
Compound containing oxygen