Homeostasis, it is the process of organisms regulating their internal conditions. <span />
        
             
        
        
        
Answer:
Explanation:
A community structure is define by the diverse organism present and the various number of species. 
A community requires both biotic and abiotic factor to form a good structure. 
Base population is needed - this are the primary producer, that transfer energy to other organism in the environment. The produce their food themselves. 
Consumers - consumers feeds on producers, herbivores animals feeds on producer/plant while carnivores feeds on herbivores. Energy is then transfer when they chemical reaction takes place via the food comes
Decomposer - They act on the dead and remains of plant and animal. They help release nutrient back into the soil. Example of decomposer is earth worm.
 
        
             
        
        
        
Answer:   A
Explanation:
Carrying Capacity because it is showing how many ferns the rainforest can support.
 
        
             
        
        
        
A river carrying dirt into a lake
        
                    
             
        
        
        
<span>Actually some of the important causes for the age related drop in female fertility is due to some chronic bad habits like chain smoking, regular alcohol intake and taking big dose of drugs, and also due to wrong diet or junky bad food habits, then mainly its due to hormone imbalance problems.</span>