Besides, the unit provided in prompt was a little unclear, for example, it says the carbon offset cost is $100 average through 2025. Does it mean $100 per metric ton or $100 per kilogram? I looked for buying carbon offsets online and found there are too many carbon standards for buying offsets. There are also various certification projects, yet we didn’t know what kind of project would be appropriate for UCSC. What’s more, calculating large numbers and converting the units were very difficult for many of us. The first draft we turned in, as the comments said, did not meet the requirement. As difficult as it was for us to accept the grade, we had to admit that despite the problem with calculation, there were more problems with the teamwork. The fact that our paper was too short is mainly because only two members actually finished their parts and another member finished the conclusion twenty minutes before the paper was