Across
1
Fourth state of matter
3
Group of similar cells
6
Reddish electrical conductor
7
Basic unit of life
10
Path of a planet around the sun
11
Infectious microscopic agent
13
Gas form of a liquid
14
Our home planet
Down
1
Tectonic landmass section
2
Biological catalyst
4
Measure of matter in an object
5
Positive particle in nucleus
8
Preserved remains of ancient life
9
Chemical element in table salt
12
Form of thermal energy