Across
1
Unit of heredity
4
Curved glass that refracts light
5
Unit of force
7
Basic unit of life
8
Our home planet
10
Group of similar cells
11
Glass that splits light into spectrum
12
Molten rock beneath Earth surface
Down
1
Force that attracts objects together
2
Tectonic landmass section
3
Absolute temperature scale unit
6
Blocking of light by a celestial body
9
Chemical element in table salt