C) in warm shallow seas 
this couldve been found on google
        
             
        
        
        
Answer:
Up and down
Explanation:
In the process of diffusion, a substance tends to move from an area of high concentration to an area of low concentration until its concentration becomes equal throughout a space.
 
        
                    
             
        
        
        
Answer:
During mitosis, when the nucleus divides, the two chromatids that make up each chromosome separate from each other and move to opposite poles of the cell. ... Mitosis actually occurs in four phases. The phases are called prophase, metaphase, anaphase, and telophase.
Explanation:
I hope this helps :))
(This is from google) 
 
        
             
        
        
        
Anatomy During Contraction
-Sarcomere, itself, is shorter
-H-zone is shorter (part of A-band that doesn't have actin filaments in it)
-I-band gets shorter (part of sarcomere lacking myosin)
-A-band stays the same size (zone that contains myosin)
        
             
        
        
        
An adaptation-----------------------