An energy resource that can be replaced by nature in a relatively short time is known as a "<span>inexhaustible energy resource" but these are very rare in nature. </span>
        
                    
             
        
        
        
D
Explanation:
With the help T cells , B cells make special proteins called antibodies which stick to antigens on surface of germs stopping them in their track.
 
        
             
        
        
        
I need more to answer the question
        
             
        
        
        
Had to look for the options and here is my answer. The answer that fits the blank is SPATIAL NEARNESS. When we say spatial nearness, this refers to small distance or closeness and marital homogamy becomes a choice in marriage. <span>Marital homogamy refers to the relationship wherein someone marries another who are of the same sociological status.</span>
        
             
        
        
        
Hmm. This one’s simple. It’s definitely biodiversity, because if there are lots of organisms, people can fulfill their niches easily. Carbon dioxide and pollution just harms the organisms and salt water doesn’t do much good, except in ocean ecosystems. The answer is C: Biodiversity.