Quick Answer. According to The Free Dictionary, etiology, also spelled aetiology, is the study of exploration of the cause or factors contributing to something. In pathology, it specifically denotes the investigation into the cause or origins of a disease. Continue Reading.
Pellets deliver consistent, healthy levels of hormones for 3-4 months in. women and 4-5 months in men. They avoid the fluctuations, or ups. and downs, of hormone levels seen with every other method of delivery.
Brown pelicans live a long time. The record for the longest life in the wild is 43 years. Only 30% survive the first year and only 2% live longer than 10 years. Sometimes chicks peck their younger siblings or push them out of the nest and they die.