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    Fick's law -- how insects are adapted for gas exchange

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    Rate of diffusion=surface area X differecnce in concentration / length of diffusion pathway

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    https://brainmass.com/biology/insect-anatomy-and-physiology/fick-s-law-how-insects-are-adapted-for-gas-exchange-8088

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    Fick's Law
    <br>
    <br>Q = D A (C1-C2)/L
    <br>
    <br>Q, rate of diffusion of substance between two locations
    <br>
    <br>D, Diffusion coefficient of the substance in a given medium
    <br>
    <br>A, cross sectional area over which diffusion is occurring (surface area)
    <br>
    <br>C1, C2, concentrations of the substance in the two locations
    <br>L, distance between the two locations
    <br>
    <br>Thus (C1-C2)/L = Concentration gradient.
    <br>
    <br>
    <br>Evolutionary changes optimize Q by favouring certain ...

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