Final answer:
High-income countries can support poorer countries in participating in efficient abatement by sharing financial burdens and providing technologies for pollution control. Private market solutions like ecotourism can also indirectly fund environmental conservation in low-income nations.
Step-by-step explanation:
To encourage poorer countries to participate in efficient abatement despite the potential adverse effects on their economies, high-income countries can provide support in various forms. One compelling argument is that high-income countries may need to share some of the financial burdens of reducing greenhouse gas emissions, recognizing the disproportionate impact climate change policies might have on low-income nations. This support can materialize through both public and private channels. Public funding might include direct financial aid or technology transfer, enabling poorer countries to access modern pollution-control technology. On the private market front, there is potential for ecotourism, where tourists from richer countries pay to experience the natural wonders of poorer nations, thereby indirectly funding environmental conservation efforts.