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  • Rights: The University of Waikato
    Published 17 September 2009 Referencing Hub media
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    In this video, Associate Professor Abby Smith, from the University of Otago, talks about what we can do to help reduce ocean acidification1.

    Point of interest
    Make links to other initiatives to reduce carbon emissions2 that students may have heard of.

    Transcript

    ASSOC PROF ABBY SMITH
    One of the things about ocean acidification is that it’s really scary. I wouldn’t like to see the marine environment without any shelled creatures in it, and I’m pretty sure most people wouldn’t. Whether you just eat molluscs3, or whether you collect shells, or whether you are interested in the survival of biodiversity4 on this planet5, probably most people don’t want to see our ocean to be completely without shell-producing organisms. There is very little we can do about it. We have already produced enough carbon6 to cause a lot of trouble. There is absolutely no geo-engineering solution that we know of. There is nothing we can put in the sea to make it turn out, to fix it. There is not antacid for the indigestion of the ocean. What we need is to stop producing carbon dioxide7 in our atmosphere8 right now. So when you have the opportunity not to use your car, you should think about all those little tiny creatures out there in the sea desperately struggling to make their skeletons and walk.

    Acknowledgements:
    A and M Macleod
    Barbara Agnew
    Rosminah

    1. ocean acidification: Decrease in ocean pH due to higher levels of dissolved carbon dioxide.
    2. carbon emission: The amount of carbon released into the atmosphere.
    3. molluscs: A large division of invertebrate (without a backbone) animals. The best-known molluscs are snails, slugs, shellfish, octopuses and squids.
    4. biodiversity: The range of species found in a particular region. The more species that exist (the higher the biodiversity), the more likely it is that an ecosystem will survive episodes of change.
    5. planet: In our Solar System, a planet is defined as an object that orbits the Sun, is big enough for its own gravity to make it ball-shaped and keeps space around it clear of smaller objects.
    6. carbon: A non-metal element (C). It is a key component of living things.
    7. carbon dioxide: CO2 is a colourless, odourless, incombustible gas. It is a product of cellular respiration and combustion and is an essential component in photosynthesis.
    8. atmosphere: 1. The layer of gas around the Earth. 2. (atm) A non-SI unit of pressure equivalent to 101.325 kPa.
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      ocean acidification

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    2. Decrease in ocean pH due to higher levels of dissolved carbon dioxide.

      biodiversity

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    4. The range of species found in a particular region. The more species that exist (the higher the biodiversity), the more likely it is that an ecosystem will survive episodes of change.

      carbon dioxide

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    6. CO2 is a colourless, odourless, incombustible gas. It is a product of cellular respiration and combustion and is an essential component in photosynthesis.

      carbon emission

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    8. The amount of carbon released into the atmosphere.

      planet

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    10. In our Solar System, a planet is defined as an object that orbits the Sun, is big enough for its own gravity to make it ball-shaped and keeps space around it clear of smaller objects.

      atmosphere

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    12. 1. The layer of gas around the Earth.

      2. (atm) A non-SI unit of pressure equivalent to 101.325 kPa.

      molluscs

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    14. A large division of invertebrate (without a backbone) animals. The best-known molluscs are snails, slugs, shellfish, octopuses and squids.

      carbon

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    16. A non-metal element (C). It is a key component of living things.