Final answer:
No binding agreement was reached at the Copenhagen Summit due to the different concerns of poor and wealthy countries.
Step-by-step explanation:
The reason why no binding agreement about global warming was reached at the Copenhagen Summit is because poor and wealthy countries had different concerns. The summit brought together countries from all over the world, each with their own priorities and interests. Developing countries were worried about the impact of binding agreements on their economy, while developed countries were concerned about the costs of reducing emissions. These differing concerns made it difficult to reach a consensus on how to address global warming.
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