Across
1
Biological catalyst
3
Preserved remains of ancient life
5
Group of similar cells
7
Tectonic landmass section
8
Nerve cell in the brain
Down
2
Unit of energy
4
Unit of heredity
6
Ball of burning gas in space
9
Reddish electrical conductor
Biological catalyst
Preserved remains of ancient life
Group of similar cells
Tectonic landmass section
Nerve cell in the brain
Unit of energy
Unit of heredity
Ball of burning gas in space
Reddish electrical conductor