In a general meeting about environmental conservation, the speaker introduced the topic by addressing the importance of trees in maintaining ecosystem balance. She illustrated how trees not only provide oxygen but also serve as a habitat for various species. Following that, she described specific methods for planting trees in urban areas, highlighting community involvement in making these initiatives successful. To conclude, she encouraged the audience to participate in local tree-planting events.
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.