GnRH stimulates the pituitary gland to produce follicle stimulating hormone (FSH), the hormone responsible for starting follicle (egg) development and causing the level of estrogen, the primary female hormone, to rise.
The Great Alaska Earthquake lasted for nearly five minutes and registered a magnitude of 9.2, still the largest ever recorded in North America and second only to the 9.5-magnitude quake that struck Chile in 1960.
Alaska contains 17 of the 20 highest peaks in the United States. At 20,320 feet, Mt. McKinley is the tallest mountain in North America. Alaska has roughly 5,000 earthquakes every year. In March of 1964, the strongest earthquake recorded in North America occurred in Prince William Sound with a magnitude of 9.2.