Although just a few short assessment statements, this topic is one we could investigate for weeks. Key to understanding this is thinking about how we evaluate the precautionary principle with regard to anthropogenic environmental impacts:
“The theory that an action should be taken when a problem or threat occurs, not after harm has been inflicted; an approach to decision- making in risk management which justifies preventive measures or policies despite scientific uncertainty about whether detrimental effects will occur“. From Dictionary.com.
(Includes some slides from G3 Human Impacts, related to Ozone Layer)
While working through all of the resources, think about how you distinguish between the following:
- natural and enhanced greenhouse effect
- anthropogenic vs natural causes
- global warming vs climate change vs climate destabilisation
In this TED Global 2010 talk, Lee Hotz describes the work of researchers in the Antarctic, studying the history of our planet’s climate, through drilling ice-cores that go back in thousands of years.
For all the rest of the resources (and stacks of video clips), click on over to the main page for 5.2 Greenhouse Effect.
Here is the class presentation – shadowed images are links. I’ve included the slides from G3 on the ozone layer. Make sure you understand that the greenhouse effect itself is a natural phenomenon, enhanced by human activity. Be sure also to distinguish between the greenhouse gases in the troposphere and ozone layer – they are in different positions, with different functions.
Essential Biology 5.2 and G3: The Greenhouse Effect and Impacts of Humans on Ecosystems.
Click4Biology:The Greenhouse Effect
More decent resources from Cutting Edge
Use these CO2 data to plot trends and annual cycles with a spreadhseet.
Comments have been disabled.