Across
1
Gas essential for breathing
5
Unit of heredity
6
Magnetic metallic element
7
Basic unit of life
8
Tectonic landmass section
Down
2
Biological catalyst
3
Precious yellow metallic element
4
Naturally occurring inorganic solid
Gas essential for breathing
Unit of heredity
Magnetic metallic element
Basic unit of life
Tectonic landmass section
Biological catalyst
Precious yellow metallic element
Naturally occurring inorganic solid