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Negative and Positive Feedback Loops

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on 15 September 2014

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Transcript of Negative and Positive Feedback Loops

Homeostasis
“The tendency of an organism or cell to regulate its internal environment and maintain equilibrium, usually by a system of feedback controls, so as to stabilize health and functioning”







What is a feedback loop?
Climate Change is a Positive Feedback
Some positive feedback are what cause changes in climate. A positive feedback is a process in which an initial change will bring about an additional change in the same direction.

As time goes on, scientists are finding more and more of these positive feedback mechanisms, causing further increases in the warming effects.
Positive Feedback Loops and the Bark Beetle
The Bark Beetles have co-evolved with their host trees for over thousands of years, meaning the bark beetles are a crutial part of their environment.
Examples of Negative Feedback
negative feedback loops are the opposite of positive loops but instead of continous they end after a cycle.
Work Cited
http://biochemhelp.com/define-homeostasis-what-is-the-difference-between-negative-and-positive-feedback-systems.html#sthash.a2iwzVId.dpuf
Negative and Positive Feedback Loops
Positive: Process in which an initial change will bring about an additional change in the same direction

Negative: Initial change will bring about an additional change in the oposite direction
sun comes out
flowers opening
flower stays open
sun going down
flowers closed
staying closed
Genres and Audiences
We felt the genre of the articles and chapter from the text was scholarly, statistical, non-fiction, text book, and anecdotal because they did have first hand experiences.
Audiences:
Scientists
Researchers
Students/Teachers
Environmentalist
General Public
Nature Writes
Global Warming Activists
QUESTIONS FOR THE AUDIENCE
What is an example of a feedback loop that involves science?
Full transcript