Across
1
Hottest planet in solar system
3
Push or pull on an object
6
Nerve cell in the brain
7
The Red Planet
8
Naturally occurring inorganic solid
11
Preserved remains of ancient life
Down
2
Element found in all living things
4
Tectonic landmass section
5
Ball of burning gas in space
9
Substance with pH above 7
10
Center of an atom or cell