Answer:
the periodic table
Explanation:
the periodic table show all the element to your answer
 
        
                    
             
        
        
        
most likley true? 
im not sure but imma go with true
 
        
                    
             
        
        
        
The main function of the cell membrane is that regulates and monitors the movement of specific substances into and out of the cell, permitting only some substances to move across and not allowing others.
        
             
        
        
        
Answer:
Natural selection
Explanation:
The genetic variation on which natural selection acts may occur randomly, but natural selection itself is not random at all. The survival and reproductive success of an individual is directly related to the ways its inherited traits function in the context of its local environment.
 
        
             
        
        
        
Answer:
An example that is not mentioned would be when plants give off oxygen because oxygen is vital to keep living things that require it, alive. 
Explanation: