横向
1
Disturbance that transfers energy
4
Gas essential for breathing
5
Measure of matter in an object
7
Basic unit of life
9
Unit of power
10
Natural satellite of Earth
11
Preserved remains of ancient life
纵向
2
Group of similar cells
3
Element found in all living things
6
Unit of heredity
8
Center of an atom or cell
12
Tissue that contracts for movement