Across
1
Ball of burning gas in space
4
Nerve cell in the brain
7
Unit of force
Down
2
Magnetic metallic element
3
Preserved remains of ancient life
5
Positive particle in nucleus
6
Mass per unit volume
8
Unit of heredity
Ball of burning gas in space
Nerve cell in the brain
Unit of force
Magnetic metallic element
Preserved remains of ancient life
Positive particle in nucleus
Mass per unit volume
Unit of heredity