Answer:
Shifting seasons are directly linked to warmer global temperatures. A slight change in temperature is enough to push the spring thaw earlier, and delay the first frost until later in the fall. ... The US EPA uses leaf and bloom dates reflecting national phenology trends to indicate climate change.
 
        
                    
             
        
        
        
Answer:
The nitrogen cycle represents one of the most important nutrient cycles found in terrestrial ecosystems (Figure 9s-1). Nitrogen is used by living organisms to produce a number of complex organic molecules like amino acids , proteins , and nucleic acids .
Explanation:
 
        
             
        
        
        
Increasing species diversity can influence ecosystem functions — such as productivity — by increasing the likelihood that species will use complementary resources and can also increase the likelihood that a particularly productive or efficient species is present in the community
        
             
        
        
        
Answer:
I'm sorry cant see it very well
 
        
             
        
        
        
I believe the best answer is that the coral animals' endosymbiotic dinoflagellates may get "shaded" out by the diatoms.Coral reefs found under water held together by calcium carbonate structure which are secreted by corals. They are the most diverse of all marine ecosystems. During Global warming the rising temperatures can stress coral polpys, causing them to lose algae that live in the polpys' tissues. Making the coral to turn completely to white (coral bleaching) hence they become resistance to threats such as disease and may therefore die.