In "Smith, 2020, pp. 15-20," the author discusses the impact of climate change on global ecosystems. Smith highlights how rising temperatures and changing precipitation patterns are affecting biodiversity, leading to shifts in species distribution and habitat loss. Additionally, the text examines the role of renewable energy in mitigating these effects. Smith emphasizes the importance of transitioning to sustainable energy sources, such as solar and wind power, to reduce greenhouse gas emissions and promote environmental resilience.