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Luigi set up the following apparatus to investigate how temperature affects transpiration rate 2.1give the name of the apparatus 2.2explain what would happen to the speed of movement of the air bubble if Vaseline was applied to the ventral surfaces of all the leaves
2.3give a hypothesis for this experimental investigation 2.4identify the a) independent variable b)dependent variable 2.5give a reason why this apparatus should be allowed to stand before starting the experiment​