Earth Hour Cartoon Prof. LR:- Arpit! You have not submitted the Renewable Energy Case Study till now. What is the excuse this time? Arbit Choudhury:- Sir, I could not complete the case study since I was participating in Earth Hour. Tweet This Post Leave a Reply Cancel reply Your email address will not be published. Required fields are marked * Name * Email * Website Comment You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>