Undergo differentiation 
become stem cells 
turn on all of the genes found in the nucleus 
some cells can undergo cell division
        
                    
             
        
        
        
Answer:
Next to threat to birds put building national parks it'll give the a place to mate and lay eggs.Next to lack of protection against external threats put using wind energy. Next to fewer collection centers put recycling resources.
Explanation:
 
        
             
        
        
        
Populations 
communities
ecosystem
biosphere
        
             
        
        
        
Answer: decide if the trait is helpful for the organism
observe the traits of the organism's children
Explanation:
I think those are the 2
 
        
                    
             
        
        
        
Answer: C
Explanation: All organisms someway somehow must compete for essential resources.