Addressing climate change and preserving biodiversity in North America requires a range of strategies that address both the causes and the impacts of these issues. Some of the best ways to address these challenges in North America include:

1. Reducing greenhouse gas emissions: North America is one of the largest contributors of greenhouse gas emissions in the world, so reducing emissions is critical. This can be achieved through a variety of measures, including transitioning to renewable energy sources, improving energy efficiency, promoting public transportation, and reducing deforestation and other land use changes.

2. Conserving and restoring ecosystems: Protecting and restoring natural ecosystems, such as forests, wetlands, and grasslands, is essential for preserving biodiversity and mitigating climate change. This includes efforts to protect and expand protected areas, such as national parks and wildlife reserves, and promoting sustainable land use practices.

3. Promoting sustainable agriculture: Agriculture is a major contributor to greenhouse gas emissions and also a key driver of biodiversity loss. Sustainable agriculture practices, such as regenerative agriculture, can help reduce emissions, preserve biodiversity, and enhance soil health.

4. Encouraging green infrastructure: Green infrastructure, such as green roofs, rain gardens, and permeable pavement, can help reduce the urban heat island effect and mitigate flooding, while also providing important habitat for wildlife.

5. Supporting renewable energy development: North America has abundant renewable energy resources, and promoting the development of wind, solar, and other forms of clean energy can help reduce greenhouse gas emissions and create new jobs.

6. Engaging local communities: Engaging local communities in climate and biodiversity conservation efforts is critical for creating long-lasting and effective change. This includes educating people on the importance of conservation and sustainability, involving them in decision-making processes, and providing opportunities for participation in conservation efforts.