Across
1
Path of a planet around the sun
4
Nerve cell in the brain
7
Our home planet
8
Infectious microscopic agent
Down
2
Element found in all living things
3
Substance with pH above 7
5
Unit of force
6
Mass per unit volume
Path of a planet around the sun
Nerve cell in the brain
Our home planet
Infectious microscopic agent
Element found in all living things
Substance with pH above 7
Unit of force
Mass per unit volume