Answer:
Yes scientist will need to develop multiple treatments to control symptoms.
Explanation:
because if they only do one treatment it may not work for everyone because some people could be allergic to that one treatment that's why there are multiple treatments.
 
        
             
        
        
        
Natural variation provided the phenotypes that natural selection then acted on, over time causing evolution
        
             
        
        
        
The third one.……...................
        
             
        
        
        
<h2>
Answer:</h2>
Blue winged warblers are the popular species having distinct Buzz Buzz sounds. They are most likely to live in bushy fields and known as worm eater. Their favorite food is insects and spiders.
As the springs arrives, it will affect the blue winged warbles in a very positive way. They will be more likely to reproduce in spring. They will also find more food and shelter in spring.