Across
1
Group of similar cells
5
Path of a planet around the sun
6
Ball of burning gas in space
Down
2
Nerve cell in the brain
3
Amplified beam of light
4
Our home planet
7
Positive particle in nucleus
8
Fourth state of matter
Group of similar cells
Path of a planet around the sun
Ball of burning gas in space
Nerve cell in the brain
Amplified beam of light
Our home planet
Positive particle in nucleus
Fourth state of matter