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As thorough as you’ve made your response, it skates past the largest gap in my knowledge in the first few points.

1. We know that man-made emissions of CO2 are rising rapidly.
3. All other plausible explanations for the rise in CO2 concentrations in the atmosphere have been tested and failed.

Assuming these items are correct, I have little argument or concern with anything else that follows. My concern and question is that of causality, and many dogmatic individuals have told me that we know man-made emissions of CO2 are rising.

How do we know this? What have been our methods in determining this knowledge? What are the primary contributors of man-made emissions? What are the other plausible explanations for rising atmospheric CO2 and how have they been tested? To what degree, as an overall percentage of all contributing factors, do man-made emissions contribute?

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