What stuck with me most was seeing my classmates bring up the topic in class. Our teacher showed us videos of overflowing landfills and polluted rivers, explaining how improper waste disposal harmed wildlife and our own health. Slowly, the grumbles faded. I noticed the neighborhood's trash cans were no longer a messy pile, and even the street vendors began using biodegradable bags. It wasn't a grand, dramatic revolution; it was a quiet, daily change that seeped into everyone's life. Now, sorting garbage feels like second nature, and I realize that's how most social transformations happen-not with a bang, but with countless small, intentional choices.