Main Idea of Renewable Energy Lecture
In this lecture, we will explore the fascinating topic of renewable energy. Renewable energy comes from natural sources that are constantly replenished. Examples include solar energy, wind energy, and hydroelectric power. Unlike fossil fuels, renewable energy sources do not deplete over time and have a much lower environmental impact. We will examine why renewable energy is important and discuss how it can help reduce our carbon footprint.
Note: This question has been adapted from its original format to accommodate a reading-based version. In the official TOEFL exam, speaking and listening sections require verbal responses and audio prompts, which are not represented here. Please note that this adaptation may not fully reflect the nature or difficulty of the official exam. The audio feature for these sections will be available soon.