A big welcome to Attleboro High School’s AP Biology (I presume MA). There instructor, Mr. Lemire, linked to DSN from the course blog. Students please feel free to post comments and ask questions. Peter and I (and the other bloggers here at Sb) will be happy to answer your questions. For Peter and I, you may want to keep them ocean or biology related otherwise you will never know what kind of answer you wil get!