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Do different coloured wavelengths of light affect the rate of photosynthesis in Canadian Pond Weed?  

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Do different coloured wavelengths of light affect the rate of photosynthesis in Canadian Pond Weed? Aim; For the aim of this experiment I am trying to discover if different coloured wavelengths of light affect the speed of photosynthesis in Canadian pond weed either speeding up the rate of photosynthesis or prolonging its effects, or even in some places stopping it take place completely. Prediction; I predict that the different wavelengths of coloured light will affect the rate of photosynthesis, for example I believe that when there is a green filter on the light there will be a very slow rate of photosynthesis, almost no reaction at all because pond weed is green and so this shows me that pond weed does not absorb green light it refracts it yet absorbs all the other coloured wavelengths. I also believe that photosynthesis will not occur very fast with a similar colour to green such as yellow...

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