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    im sitting paper two of my additional science ISA tomorrow morning and i have no idea whats going to be on it or how to answer any of the questions. idk what to do please somebody help me!

    I am doing the same papers as you tommorrow and the hypothesis for it is ‘The harder muscles work, the sooner the muscles become fatigued’.

    The practical is:
    Sitting at a desk, resting your elbow on the desk, clench and unclench your fist once every 3 seconds. Record how long it takes before it becomes too difficult to keep doing this - this is the point where your muscles are fatigued. Rest for a short while and repeat this process, each time increasing the rate at which you're clenching and unclenching your fist.

    That's all i know and we got told to research some trustworthy and untrustworthy sources one of each.
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