Across
1
Substance with pH below 7
4
Blocking of light by a celestial body
5
Form of thermal energy
6
Disturbance that transfers energy
Down
2
Naturally occurring inorganic solid
3
Group of similar cells
7
Compound containing oxygen
8
Unit of energy
Substance with pH below 7
Blocking of light by a celestial body
Form of thermal energy
Disturbance that transfers energy
Naturally occurring inorganic solid
Group of similar cells
Compound containing oxygen
Unit of energy