A good Idea

Discussion in 'General Motoring' started by myramawa, Sep 18, 2005.

  1. myramawa

    myramawa Guest

    We can together something do for the rain forest and our oxygen!
    So look on www.6606.forestation.biz
    Much fun with read the page and a positive decision!
    A. Mayer
    myramawa, Sep 18, 2005
  2. myramawa

    TeGGeR® Guest

    wrote in

    Most of the earth's atmospheric free oxygen comes from water evaporation,
    which covers about 80% of the earth's surface. The rain forest is a net-
    zero contributor to atmospheric oxygen.
    TeGGeR®, Sep 19, 2005
  3. myramawa

    Enrico Fermi Guest

    Cite your source. BTW, water does not evaporate to its constituent
    molecules. It evaporates to gaseous H2O. Our atmosphere would burn
    constantly, like the Hindenburg, if your theory were true.
    Enrico Fermi, Sep 19, 2005
  4. The O2 comes from algae and cyanobacteria photosynthesis. Algae and bacteria
    are more effective because of the chemistry of photosynthesis: the carbon is
    used from the air to create carbohydrates, which are either reused
    (releasing CO2 again) or are used for building the plant structure. Woody
    perennials, like trees, need less for the plant structure while short-lived
    algae and bacteria need the most (high school biology).

    I don't have any links for the relative amounts - I haven't looked that up
    in years - but I'm quite sure it's accurate. Well, not the "evaporation"
    part, but I have trouble with words at times, too! Currently I'm looking for
    world livestock census for the last century or so, looking for the source of
    atmospheric CO2 rise. I've pretty much ruled out deforestation as a major
    cause. That's partly for the reason TeGGeR cites, partly because
    deforestation of the Middle East (which was on a far larger scale than South
    American deforestation has been) didn't produce the rise we are seeing, and
    partly for lag times and other numbers issues. If anybody has any good
    sources on that, I'll appreciate them.

    Michael Pardee, Sep 19, 2005
  5. myramawa

    TeGGeR® Guest

    Free oxygen and oxygen bound with hydrogen atoms are not the same thing.

    Water (bound oxygen/hydrogen combination) also contains free oxygen that is
    not bound. It is this which is released on evaporation.

    If you were to try to crack the water molecule into its constituent atoms,
    this would requires vast amounts of energy. More, in fact, than the
    hydrogen itself would provide.

    In spite of certain school texts stating that the rain forest provides up
    to 40% of the earth's oxygen, plant-generated oxygen is not a significant
    source of atmospheric oxygen. Source: Facts not Fear, by Michael Sanera &
    Jane Shaw. Regnery Books, 1996.
    TeGGeR®, Sep 19, 2005
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