Answer:
 It is possible to produce an offspring from a zebra mating with a donkey. Indeed, in Florence, Italy, a male zebra mated with a female donkey and produced a striped mule.
 
        
             
        
        
        
Answer:the decline of lichens is an important indicator of an imbalance in the ecosystem. this research can help system ecologists predict how pollution will affect the entire ecosystem 
Explanation:
 
        
                    
             
        
        
        
Answer:
Hmm.
Explanation:
The ocean is the dominant physical feature on our planet Earth, covering approximately 70% of the planet's surface. 
 
        
             
        
        
        
Answer:
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. ... Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover.