1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution Im not sure how to use the above posts but please post back if it is okay for me to post my study guide so that yall can please help me i have it typed and my bio teacher said that he was not going over the correct answeres so i need youe help cause i really needto pass this test. i have a few of them answered and have tryed to find many but i need some help my Exam is tuesday so if i could get help before then that would be great.