Anime Ch. at Part.1!! °ω°

How did ferren learn about engineering, if not in school? how might this have been similar to how the ancient cultures learned engineering?

Which of the following is an indicator that scallops are done? a. they turn milky white. b. they become transculent. c. the shells open. d. they separate easily into segments.

Sorry about the calculator and me asap me asap because for real like some no one answers question one for me so that's why i'm posting them over to that way someone can at least answer number two or one for me if you do you so much if you do it would be a complete big blessing to me