Answer:
I'm sorry I can't answer this I'm trying to get more points
 
        
             
        
        
        
Answer:
antibiotics
Explanation:
pesticides have to do with nature and killing bugs, weeds, etc. Irrigation has to do with watering plants and people. Trucks are vehicles that transport. Antiobiotics help kill bad bacteria in your body when your sick, so that's health related. 
 
        
             
        
        
        
Answer:
D
Explanation:
All of these factors change the aquatic environment or ecosystem. Hope this helps :)
 
        
                    
             
        
        
        
Two equally frequent gametes containing only parental allele combinations and no recombinant gametes