The key concept for Section 19.3. The thing that makes the current atmospheric warming problem urgent. Define climate change tipping points and give three examples. Briefly describe the possible effects of a warmer atmosphere on arctic sea ice and land-based ice, permafrost, and sea levels. Define ocean acidification and explain the way and the reason why it is occurring. Explain the way in which atmospheric warming, global drought, extreme weather, and an intensified water cycle are related. The possible effects of climate disruption on biodiversity, food production, and human health and economies. Pick three of these effects and describe the way in which each can become a part of positive feedback loop leading to increased climate disruption. Summarize the science community’s discussion of whether or not IPCC scientists were too conservative in their projections.
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