横向
1
Icy body with a tail near the sun
3
Smallest unit of an element
4
Push or pull on an object
5
Tissue that contracts for movement
8
Our home planet
9
Tectonic landmass section
纵向
1
Basic unit of life
2
Reddish electrical conductor
5
Naturally occurring inorganic solid
6
Ball of burning gas in space
7
Biological catalyst
10
Unit of energy