Answer:
Half Lifes
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A spectroscope
Explanation:
The color of the light emitted by her flashlight can best be studied using a spectroscope. 
Spectroscope is an instrument used to observe the light emitted by a substance. 
Just like a prism, it splits up light using its different wavelengths. 
The light entering the scope is split into its different component parts. 
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Diffraction brainly.com/question/3183125
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Answer:
im pretty sure its the 3rd one
Explanation:
 
        
                    
             
        
        
        
Answer:
Coloring is important to survival because it could be bright as in a warning or camouflage so the animals arent easily spotted