Final answer:
The predicted amount of global warming by 2100, if current policies continue, is 4.45 °C.
Step-by-step explanation:
The predicted amount of global warming over preindustrial levels by 2100, if current policies for worldwide emissions reduction continue, is 4.45 °C. This prediction is based on the assessment made by the Intergovernmental Panel on Climate Change (IPCC) in their Fifth Assessment Report. The report takes into account various scenarios and factors contributing to global warming, such as greenhouse gas emissions and climate feedback mechanisms.
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