The cell membrane helps maintain homeostasis by controlling movement and what goes in or out of the cell.The cell membrane makes itself important by  controlling the substances that penetrate the cell, either entering the cell, or leaving the cell<span>.</span>
        
             
        
        
        
Answer:
Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations
Evolution is a gradual change in the inherited traits of a population over many generations. Natural selection is a mechanism where the members of a population best suited to their environment have the best chance of surviving to pass on their genes.
 
        
                    
             
        
        
        
1.The oldest rocks are exposed in the center
        
                    
             
        
        
        
B. Cytoplasm- is made up of a jelly-like substance composed of mainly water and found between the cell membrane and nucleus. The cytoplasm makes up most of the body cells which hold organelles as well.
 
        
             
        
        
        
Explanation:
Maby go through the lesson by your self  cuz im just a middle schooler