Across
1
Preserved remains of ancient life
3
Reddish electrical conductor
4
Second lightest element
7
Our home planet
9
Precious yellow metallic element
11
Naturally occurring inorganic solid
Down
2
Tectonic landmass section
3
Solid with repeating atomic pattern
5
Absolute temperature scale unit
6
Gas essential for breathing
8
Measure of matter in an object
10
The Red Planet