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Investigative the factors which effect respiration Osmosis is a kind of diffusion, when membrane has tiny holes in it, which let small molecules though it, and not let bigger ones though like sugar. It's important because it lets photosynthesis happen and if it doesn't no water or minerals equals no sugar which means it would get minerals deficiency disease. Sugar effects how much water the plant absorbs. These are some of the factors i could change: Sugar concentration Size of potatoes But the one i will change will be concentration of the sugar solution i will start off with no sugar 0.0 then go up in two 0.2 0.4 0.6 0.8. To make it a fair test i will keep the potatoes the same size in length and width. I am going to record my results by measuring the mass instead of the size of potato because it would be more accurate and easier...

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