The science behind sight Crossword
               
               
               
               
               
               
               
               
               
               
               
 
 
Down: 1) Gives off light and makes the area around it brighter2) Something that gives off light3) It bounces back without passing through the surface Across: 4) You guess or estimate the size or amount of something 5) Something that gives off light6) You can see through it
 

 

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