{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 3_fillin version

Lecture 3_fillin version - Atmosphere Opositive rom plants...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Atmosphere 21% O 2 78% N 2 How stays the same? output input O 2 from plants O 2 removed by us (breathing) negative feedback positive feedback Lecture 3: Feedback systems and Intro to BGCs Feedback systems : systems tend to ______ in response to feedback; output effects input SYSTEM This balance, where input approximately equals output, or where values remain relatively constant, is called _________ ________ ______. _______ systems are in dynamic equilibrium (stable) Most systems receive feedback and make a ______ in response to the feedback o Output effects input The _______ change can be enhanced (made greater) or weakened. Classic example of FEEDBACK: THERMOSTAT Negative feedback response ________ initial change; keeps balance (like a seesaw) Example 1 : carbon dioxide (CO 2 ) biofeedback As atmospheric CO 2 INCREASES, the biosphere grows (more plants). More plants remove more CO 2 from the atmosphere causing atmospheric CO 2 to DECREASE. Example 2 : fish As the number of fish in a pond INCREASES, the amount of food available in the pond decreases. Due to lack of food the number of fish will then DECREASE.
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ 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