Be prepared for exam day with Barron’s. Trusted content from AP experts! Barron’s AP Biology: 2020-2021 includes in-depth content review and practice. It’s the only book you’ll need to be prepared for exam day.Written by Experienced Educators Learn from Barron’s--all content is written and reviewed by AP experts Build your understanding with comprehensive review tailored to the most recent exam Get a leg up with tips, strategies, and study advice for exam day--it’s like having a trusted tutor by your side Be Confident on Exam Day Sharpen your test-taking skills with 2 full-length practice tests Strengthen your knowledge with in-depth review covering all Units on the AP Biology Exam Reinforce your learning with practice questions at the end of each chapter