Answers to Respiratory & Excretory Systems Exercises

Let’s see how you did! If you didn’t get a few of these, don’t let it stress you out – it just means you need to play with more experiments in this area. We’re all works in progress, and we have our entire lifetime to puzzle together the mysteries of the universe!


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One Response to “Answers to Respiratory & Excretory Systems Exercises”
  1. lynn_mcaleece says:

    #15 is incorrect. Kidneys filter BLOOD and MAKE urine; they don’t filter urine.
    https://www.niddk.nih.gov/health-information/kidney-disease/kidneys-how-they-work

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