Hannah Alper is an influencer in several ways:

1. **Advocacy**: She uses her platform to share her concerns about the environment and social issues, encouraging her audience to become more aware and take action.

2. **Blogging**: Starting at a young age, she engaged in blogging to express her thoughts and spread awareness about important topics.

3. **Public Speaking**: She has spoken to large audiences, sharing her insights on a variety of subjects, further amplifying her influence.

4. **Inspiration**: Hannah aims to motivate others to take action, regardless of their age, demonstrating that everyone can contribute to positive change.