<p>I just took Lab Biology this year (9th grade) and I plan on taking the SAT II bio next October.</p>
<p>We have covered everything except for organismal biology of human and plants.</p>
<p>Should I buy Campbell's Biology 7th edition and reading through/reviewing it over the summer or should I just buy sparknotes and review that?</p>
<p>My mom's friend had Campbell's 2nd edition. Do you think using 2nd edition would suffice?</p>