Stem cells are cells of the body that can divide and become differentiated. stem cells specialise and take specific functions when an organism grows 
mature tissues such as muscle, blood, tissue, bone, nerves, liver all have different types of cells.
they come from three to five day old embryo cells. 
they represent potential in the regeneration and repair of damaged tissue. some therapies actually currently use stem cells for this reason
        
             
        
        
        
A . sexual reproduction requires two individuals from the same species, a Male and a female 
but sexual reproduction refers to the union of a Male and a female 
 
        
             
        
        
        
Answer:
 resource partitioning
Explanation:
Based on the scenario being described within the question it can be said that this is an example of resource partitioning. This term refers to when a species divides the limited resources in order to avoid competition within it's environment. Such as the two species of mice are doing by feeding in on the same resources at different times in order to avoid competition and conflict between each other. Thus allowing them to co-exist within the same environment.