Yes it's true. i can explain it with very consiously but i am going to bed now 
        
             
        
        
        
That is called Urogenital myiasis which is a parasitic infestation. These flies are in the Diptera species group and the cause of this myiasis is from the eggs and larvae of this species (fly). 
Let me know if you need further info. 
                - Dotz  
        
             
        
        
        
Answer:
it would be C, since an abiotic factor is a non-living thing that helps shape the ecosystem. 
Explanation:
If you look at A it lists flowers, which are alive. If you look at B it lists bacteria, which is alive. C doesn't list anything thats alive. D lists insects, which are alive. 
 
        
                    
             
        
        
        
Answer:
it's both
Explanation: answered it on gizmos
 
        
             
        
        
        
If they live in a river, they would most likely need fins (to swim) and gills (to breathe under water)
Hope this helps!