Across
1
Naturally occurring inorganic solid
6
Substance with pH below 7
7
The Red Planet
8
Push or pull on an object
Down
2
Second lightest element
3
Element found in all living things
4
Unit of energy
5
Infectious microscopic agent
Naturally occurring inorganic solid
Substance with pH below 7
The Red Planet
Push or pull on an object
Second lightest element
Element found in all living things
Unit of energy
Infectious microscopic agent