Across
1
Amplified beam of light
4
Gas essential for breathing
6
Our home planet
7
Element found in all living things
Down
2
Form of thermal energy
3
Center of an atom or cell
5
Disturbance that transfers energy
8
Basic unit of life
Amplified beam of light
Gas essential for breathing
Our home planet
Element found in all living things
Form of thermal energy
Center of an atom or cell
Disturbance that transfers energy
Basic unit of life