Answer:
i) Population
ii) Reproduction
iii) Reproductive isolated mechanism 
iv) Species
 
        
             
        
        
        
Are bunchgrass because they form a kind of ecosystem within the prairie.
        
             
        
        
        
Answer:
 i want to ive in habitat a
Explanation:
mark me brainliest bc im smart and helped aloyt
 
        
                    
             
        
        
        
The Answer It’s 1 min 50 Sec
        
             
        
        
        
Answer:
The living organisms must not reach equilibrium in the concentration of oxygen and carbon dioxide so that the Exchange of gases continues . Otherwise respiration and photosynthesis will stop. 
Explanation:
- Gases move along the concentration gradient i.e. from their higher concentration to lower concetration.
- If living  organisms reach a equilibrium of carbon dioxide and oxygen concentration, then The gases will not move in and out of the cells.
- This is because at state of equilibrium the concentration of gases on both side become equal and the movement completely ceases.
- If gaseous exchange in the body stops the process of respiration and photosynthesis in Plants and respiration in animal will completely stop.