Across
1
Tissue that contracts for movement
2
Molten rock beneath Earth surface
5
Fourth state of matter
6
Measure of matter in an object
7
Magnetic metallic element
8
Tectonic landmass section
Down
1
Natural satellite of Earth
2
The Red Planet
3
Biological catalyst
4
Basic unit of life
9
Preserved remains of ancient life
10
Hottest planet in solar system