Memorizing answers hardly ever results in a good grade. The questions are provided for convenience. Because of students removing and copying pages, and occasional oversights on my part, some pages may be missing. I cannot guarantee that the books contain every question that will crop up on an exam, just most of them. Use critical judgement.
Some obsolete questions are still there.
If you can't find the answer in the text or your notes, the question will probably not be used. Because of the large enrollment in this course and Earth Science, 296-102, it is necessary to run the field trip twice. Try to make the assigned date. I will arrange swaps for people with legitimate work or other conflicts. Once those needs are accomodated, I will permit swaps on a space-available basis for other reasons.