<p>Hi!</p>
<p>I was curious about what you guys think is the best way to prep for the USNCO exams. I heard Zumdahl is really good, so I bought it, but some threads also suggest Atkins. Is Zumdahl alone good enough, or should I buy Atkins as well?</p>
<p>And is it possible to prep for both USNCO and USABO at once? I've gotten Cambell's Biology, 7th ed. to prep for the USABO.</p>