There are many ways for the people in the communities to make their city much more sustainable. I live in the hills, making the environment have a lot of trees and plants. Also, the people who live on my street meet once a month to talk about how they can make the community more sustainable. When the community discusses the amount of waste they create, we all decided that we would work on lessening the amount of trash and food being wasted. Also everyone in the community tries there best to compost, recycle, and most importantly, reuse. Everyday I walk my dog, and when I see trash on the floor, I pick it up and throw it away. As well as walk around my street, I also go around my neighborhood picking up trash, while walking my dog. Every person of family has bikes to ride to school, and around, and each house has 1 car pretty much. This will lessen the amount of CO2 that goes into the atmosphere. Also biking is a good way to stay healthy. If the community keeps this up, which we have for the past year, I believe the CO2 concentration level will decrease.