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Getting ready to take the AP Environmental Science exam? Brush up on these study tips from Olympia, WA tutor Tali H...   The three-hour AP Environmental Science exam has two 90-minute sections: a 100-question multiple-choice section, accounting for 60% of the final grade, and four free-response questions (one data-set question, one document-based question, and two synthesis and evaluation questions), accounting for 40% of the final grade. As you begin studying, incorporate these tips

In order to make new discoveries about science, you must first learn how to set up an experiment. There are many ways to perform experiments and test theories, but some components of scientific discovery are always required. A controlled variable is not of interest in the target of a study. A controlled variable would ideally hold no impact on the results and take away from a study. However, control variables have a large impact on the validity of a study’s findings.  Controlled vari