<em>MARK</em><em> </em><em>ME</em><em> </em><em>BRAINLIEST</em>
Answer:
- Continuous cultivation of crops in soil leads to the depletion of certain nutrients.
- If these nutrients are not replenished, soil  becomes sterile and unfit for cultivation.
 
        
                    
             
        
        
        
I think c is the correct answer
        
             
        
        
        
This statement giving a clue that there is asexually reproduction (may be binary fission) taking place and the progenies in asexual reproduction are genetically similar to parent cell. So answer is A.
        
             
        
        
        
 a graphite neutron moderator 
 
        
                    
             
        
        
        
The correct answer is C. One change on Earth's surface can result in changes to other Earth systems.
Statistically, none of the other problems would make sense when looking at the graph, other than question A, which we know is the opposite way around. 
Hope this helped!