Across
1
Substance with pH below 7
3
Tectonic landmass section
4
Natural satellite of Earth
5
Tissue that contracts for movement
6
Hottest planet in solar system
7
Unit of force
8
Preserved remains of ancient life
10
Nerve cell in the brain
Down
2
Element found in all living things
3
Glass that splits light into spectrum
4
Naturally occurring inorganic solid
6
Unit of electric potential
9
Compound containing oxygen