Answer:
Ecology is the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
 
        
                    
             
        
        
        
Answer:
X and why realationship is the Distance between two given points 
Explanation:
 
        
                    
             
        
        
        
I think that b is the correct
        
             
        
        
        
Answer:
The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality.
Explanation:
#need any queshtions answered emidiatly- text me and I got you on pro mo speed
_we all have those times where we need those answers right away.