Across
1
The Red Planet
2
Biological catalyst
4
Group of similar cells
5
Center of an atom or cell
7
Chemical element in table salt
Down
1
Natural satellite of Earth
3
Amplified beam of light
6
Hottest planet in solar system
The Red Planet
Biological catalyst
Group of similar cells
Center of an atom or cell
Chemical element in table salt
Natural satellite of Earth
Amplified beam of light
Hottest planet in solar system