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.
A magnitude 7.5 earthquake struck off the coast of southeast Alaska on January 5 at a depth of 9.9 km (6.2 mi). A magnitude 6.1 earthquake struck the Pacific-Antarctic Ridge on January 15 at a depth of 10 km (6.2 mi). A magnitude 6.1 earthquake struck northern Sumatra, on January 21 at depth of 12 km (7.5 mi), killing one person and injuring 15 others.