USA Biology Olympiad Semifinal Exams 2016-2020 Worked Solutions

The USA Biology Olympiad (USABO) is a prestigious biology competition for high school students in the United States. It motivates students to pursue a career in science. There are two rounds of the competition: the Open exam which is held in February every year and the Semifinal exam which is a 120-minute exam for the top 10% students of the Open Exam. The Worked Solutions book serves as a guide to help students understand the reasoning behind the questions. This guide will help you hone your problem-solving and critical-thinking skills in the Biology Olympiad.

Note the official past papers are not included in the book.