Across
1
Our home planet
3
Tissue that contracts for movement
4
The Red Planet
Down
2
Center of an atom or cell
5
Push or pull on an object
6
Gas essential for breathing
7
Tectonic landmass section
8
Ball of burning gas in space
Our home planet
Tissue that contracts for movement
The Red Planet
Center of an atom or cell
Push or pull on an object
Gas essential for breathing
Tectonic landmass section
Ball of burning gas in space