Diet. Ruffed Grouse forage on the ground and in shrubs and trees. They are omnivores, although they feed mostly on plant material. In the winter, they eat the buds of deciduous trees, especially in areas where it snows.
Advanced Placement and International Baccalaureate courses are the most challenging assignments in most U.S. high schools. The AP exams, written and graded by outside experts including college faculty, are usually three hours long and contain several essay questions. They are much tougher than typical high school course finals.
The most/standard here is 15 hours per semester to graduate in 4 years WITHOUT AP credit. With AP credit you can cut 2-3 hours off per semester and still graduate in 4 years. It's not uncommon for some programs to require more than 120 credits for graduation. Mine's required 135.