Across
1
Positive particle in nucleus
4
Amplified beam of light
6
Unit of heredity
Down
2
Reddish electrical conductor
3
Icy body with a tail near the sun
5
Biological catalyst
7
Element found in all living things
8
Our home planet
Positive particle in nucleus
Amplified beam of light
Unit of heredity
Reddish electrical conductor
Icy body with a tail near the sun
Biological catalyst
Element found in all living things
Our home planet