Answer:
A. Populations were separated through geographical isolation.
Explanation:
 
        
             
        
        
        
A ruler or a meter stick depending on its length.....
        
             
        
        
        
Answer:
ovum fusing with sperm will give zygote (fertilization)
The zygote later on develops to an embryo in the womb after implantation.
 
        
             
        
        
        
The sporophyte represents Asexual form of the plant, the gametophyte represents the sexual form of the plant