Bio Exam Notes Section 5.docx

Believe this when the exploitation is being done by a

Info icon This preview shows pages 2–4. Sign up to view the full content.

believe this when the exploitation is being done by a large population in a wealthy society that  can afford the new tech. Reality: The cost goes up exponentially because as technology improves, we get more freedom  to exploit more resources, harvest more of nature, etc (eg. Discovery of oil means we can use gas motors to pump more oil). Eventually get to a point where cost outweighs benefits = disaster Population size: Illusion: the benefits of new technology will always minimize the costs of increasing population  size (poverty, disease, starvation, crime) Reality: the tragedy of the commons: as technology improves, we get more freedom to breed,  which means the population costs go up exponentially and once again we reach disaster. (3) Over the past century or so, human societies have responded to the problem of world hunger using solutions that serve inevitably to create more problems. Describe the main points in support of this view that we considered in BIOL350, and also describe the so- called ‘riskfree’ solutions that are currently being promoted. Green Revolution: o Relies on conventional plant breeding and petro-chemcials in the form of fertilizers and  pesticides Biotech Revolution: o Relies on development of GMO’s o Risks are high because we don’t know the possible consequences to human heath and the  environment o Too focused on maximizing short term yields General Problems: o Population growth o Decreased biodiversity o Destruction of ecosystems ‘Risk Free’: Population- ecology revolution o Control the number of ppl to feed Agro-Ecology Revolution
Image of page 2

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

o Controlled population and sustainable crop yields o Allow the world to feed itself with sustainable ecologically sound systems with equitable  food distribution o Preserving biodiversity (humans as partners not masters of ecology) o Moderating per capita consumption (4) In BIOL350 we considered how something called the ‘hedonic treadmill’ has a parallel in something known as the ‘Red Queen’ hypothesis of natural selection. Describe what is meant by this. ‘Red Queen’ Effect: o Organisms must always evolve and reproduce not only to gain a reproductive advantage  but also to keep up with a changing environment o Running just to stay in the same place Hedonic Treadmill: we seem driven to stay committed to endless economic growth and the  resource extraction and energy consumption needed to support it .
Image of page 3
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '13
  • L.Aarssen
  • Demography, Evolution, Final Exam Notes, death rates, Low death rates, new epoch humans

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern