横向
1
Unit of heredity
4
Force that attracts objects together
6
Smallest unit of an element
7
Preserved remains of ancient life
纵向
2
Basic unit of life
3
Mass per unit volume
4
Precious yellow metallic element
5
Molten rock beneath Earth surface
Unit of heredity
Force that attracts objects together
Smallest unit of an element
Preserved remains of ancient life
Basic unit of life
Mass per unit volume
Precious yellow metallic element
Molten rock beneath Earth surface