Answer:
because they reduce interspecific competition
Explanation:
Narrower niches are known to be more specific and limited compared to broader niches, which are generally less specific and less limited. The species that live in broad niches are named generalists because they are able to withstand different conditions. A narrow niche is often correlated with reduced overlap and thus tends to reduce interspecific competition. For example, coral reefs consist of a wide variety of species (including anemones, sea sponges, sea fans, brain corals, etc) which have narrow niches, thus showing high biodiversity.
 
        
             
        
        
        
Answer:
I dont see the image please show the image so I can help
 
        
             
        
        
        
depends on 42
subjecting an experimental group of plants to an atmosphere with a higher oxygen concentration
subjecting an experimental group of plants to an atmosphere with a higher carbon dioxide concentration
subjecting an experimental group of plants to a special soil that has been enriched with a new fertilizer
subjecting an experimental group of plants to air that gaseous nitrogen has been added to