Sustainability is like not being that one kid who eats all the snacks at the party and leaves everyone starving. It's about using Earth's stuff -- like water, trees and energy -- without totally wrecking the place. You can't just chop all the trees, dump trash everywhere, and be like "BYEEE" because...where are you gonna live, genius 😂 Instead, recycle, save water, plant more trees!! Basically, treat Earth like your BFF-- don't trash it, or it might unfriend you!