Across
1
Infectious microscopic agent
3
The Red Planet
4
Center of an atom or cell
Down
1
Gas form of a liquid
2
Group of similar cells
5
Substance with pH below 7
6
Element found in all living things
7
Push or pull on an object
Infectious microscopic agent
The Red Planet
Center of an atom or cell
Gas form of a liquid
Group of similar cells
Substance with pH below 7
Element found in all living things
Push or pull on an object