Mastering biology access - necessary?
Hey all,
I'm looking at whether to buy Biological sciences volume 1/2 new or used and wondering how necessary Mastering Biology access is (I'm doing biology 1M03 and 1A03). I don't want to have to shell out another $50 for the access (it makes buying used not such a good deal). Anyone know if the access code is good for both classes (one each semester) or if there is a separate code for each volume? How useful is it?
Thanks!
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