Across
1
Ball of burning gas in space
4
Our home planet
5
Compound containing oxygen
Down
2
Curved glass that refracts light
3
Nerve cell in the brain
6
Push or pull on an object
7
Infectious microscopic agent
8
Group of similar cells
Ball of burning gas in space
Our home planet
Compound containing oxygen
Curved glass that refracts light
Nerve cell in the brain
Push or pull on an object
Infectious microscopic agent
Group of similar cells