Saturday 4th October 2025
    Difficulty: Hard

    Body fluids (#1,051)

    Photo by <a href="https://unsplash.com/@jamie452?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Jamie Street</a>
    Photo by Jamie Street (Unsplash)

    1. What percentage of your body's weight does your blood comprise?

    2. What is the main acid in your stomach?

    3. According to the NHS, how much urine can a normal bladder in a healthy adult comfortably hold?

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