Main Idea of Climate Change Lecture
In recent years, scientists have observed a concerning trend in global temperatures. The average temperature of the Earth has been rising steadily, with 2020 recorded as one of the hottest years in history. This increase in temperature is not only a statistic; it affects ecosystems, wildlife, and human livelihoods. For instance, polar ice caps are melting at an alarming rate, leading to rising sea levels that threaten coastal communities. Meanwhile, extreme weather events such as hurricanes and droughts have become more frequent and intense. Experts agree that immediate action is necessary to combat climate change, emphasizing the need for sustainable practices and renewable energy sources.
During a recent lecture on climate science, Dr. Emily Torres highlighted the connections between human activities and climate change. She pointed out that industrial emissions and deforestation significantly contribute to greenhouse gas accumulation in the atmosphere, which traps heat. Dr. Torres concluded her presentation by urging students to become advocates for the environment and promote conversations about sustainable living.
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.