Identifying Controlling Ideas in Texts

“Read the following paragraph: "The Amazon rainforest is home to an incredible diversity of wildlife. Many species found there are not found anywhere else in the world. The preservation of this unique ecosystem is crucial for maintaining global biodiversity." What is the controlling idea of this paragraph, and how would you summarize it in one sentence? Consider this text: "Renewable energy sources, such as solar and wind power, are becoming increasingly important as we seek to reduce our reliance on fossil fuels. These clean energy options help combat climate change and promote sustainability." What is the controlling idea of this text, and how would you summarize it in one sentence?”