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Need help for biology IA idea

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Hello, I am a student in grade 12, and I struggle a lot with biology. It's time for IA's and my research question is:

“How does temperature affect the enzyme activity of lipase when digesting milk, measured by equipment changed with the use of phenolphthalein?”

The teacher said it's the easiest I can do and that many have done this before. I can't really find any former experiments on this topic, could you please tell me the IV, DV, CV and equipment I should use for the IA?? 


Thank you so much!

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