横向
1
Our home planet
3
Hottest planet in solar system
4
Element found in all living things
8
Unit of heredity
10
Molten rock beneath Earth surface
纵向
2
Curved glass that refracts light
3
Infectious microscopic agent
5
Center of an atom or cell
6
Unit of energy
7
Second lightest element
9
Path of a planet around the sun