Since hereditarily they ought to be indistinguishable so any contrasts between them will be caused by their condition. Since indistinguishable twins create from a solitary prepared egg, they have a similar genome. So any contrasts between twins are because of their surroundings, not hereditary qualities. Late examinations have demonstrated that numerous naturally actuated contrasts are reflected in the epigenome.
        
                    
             
        
        
        
Top to bottom, left to right:
Light energy, carbon dioxide, oxygen, glucose, water.
        
             
        
        
        
Answer:
food and land
Explanation:
A limiting factor is the one that limits the growth of any organism’s population. Here the population growth of an organism is limited by both availability of food and land. As the population grows, the food availability gets limited and hence most of the organism die.  
But when the population reduces, the food quantity becomes surplus and thus the organisms survive.