<p>What is the difference between the 2nd and 3rd editions of CliffsAP Biology? Anything important enough to buy the third edition?</p>
<p>I was in the same position a month ago before I bought my book (I got 3rd Edition).</p>
<p>They should be the same. The only difference I know of is that the 3rd edition includes a CD with some extra practice tests and it is slightly more expensive, but overall the 2nd and 3rd edition should have the same content.</p>
<p>There was this person I met that said the 2nd edition was better…</p>
<p>But I got the 3rd anyways. Can’t resist new things :] (eg: BB2)</p>
<p>I have the 2nd edition and I compared it with the 3rd. There are differences, but it really doesn’t matter. I used the 2nd edition to study for AP last year and did fine.</p>