1. It is about the negative effect we have on the environment.
2.non _renewable energy means that it will run out if we use it.
3.sunlight is a renewable source because we can not use it all up, it will last forever.
4. Mai thinks she has a small carbon footprint because she recycles the products she uses and she goes everywhere by bike.
5. the products we use that are bad for the environment or the energy we use that produces carbon dioxide might create a big carbon footprint.
