Description
This picture looks a bit abstract, but it is about the life cycle of paper and iPad. So far, the conclusion has come out: It is to compare the energy waste of paper and ipad from production and transportation to sales, ipad is much higher (because of Shenzhen factory transportation takes the air route). Writers need to look at pictures or find information to summarize. Because the focus is on the picture (but I only drew a draft), if the writer has any questions about that picture, come to me at any time.