Answer:
D
Explanation:
it just is i  dont know y i just know it is D
 
        
                    
             
        
        
        
The answer from edge..is well in fact A...or at least  i think.. sorry if im wrong
 
        
                    
             
        
        
        
C ; The are most active at temperatures about 53 degrees
        
             
        
        
        
Answer:
Researchers need a lot of data to monitor a species population because the environment is very diverse in types of species found at different places . 
 What happens to one part of it could affect the population of other animals, humans, and may also effect the ecosystem of that certain environmental region .