The farmer's action most likely have a negative impact on the ecosystem because may be there is no predator or controlling agent of that bird. 
<h3>Why introduction of new bird cause problem?</h3>
We know that one organism is responsible for controlling the population of other organism so if such type of controlling agent is present, the organism grow rapidly and can harm the whole ecosystem.
So we can conclude that farmer's action have a negative impact on the ecosystem due to presence of no predator or controlling agent of that bird. 
Learn more about bioagent here: brainly.com/question/842527
 
        
             
        
        
        
Answer:
filum terminale
The filum terminale is a thin strand of pia mater that helps anchor the conus medullaris to the coccyx
 
        
             
        
        
        
Answer:
Probably A.
Explanation:
The reticular formation can be said to be a network of nuclei in the brainstem that wakes or alert us to a sharp reaction or occurence at a particular time.
 
        
                    
             
        
        
        
Answer:
You're answer is C - Permissive!
Explanation:
- Eijiro <3