Physical Phenomena~ 3976+
Mathematical Concepts~ 3489+
Physiological Phenomena~ 2375+
Digestive System and Oral Physiological Phenomena~ 1174+
Chemical Phenomena~ 603+
Plant Physiological Phenomena~ 446+
Metabolic Phenomena~ 269+
Microbiological Phenomena~ 207+
Biological Phenomena~ 206+
Integumentary System Physiological Phenomena~ 175+
Ocular Physiological Phenomena~ 144+
Genetic Phenomena~ 138+
Cell Physiological Phenomena~ 134+
Immune System Phenomena~ 28+
Musculoskeletal and Neural Physiological Phenomena~ 12+
Reproductive and Urinary Physiological Phenomena~ 12+
Circulatory and Respiratory Physiological Phenomena~ 8+