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Advanced Placement (AP) Human Geography (also known as AP Human Geo, AP Geography, APHG, AP HuGe, APHug, AP Human, HuGS, AP HuGo, or HGAP) is an Advanced Placement social studies course in human geography for high school, usually freshmen students in the US, culminating in an exam administered by the College Board. [1]
The cover to the Project 4.1 Final Report, "Study of Response of Human Beings Accidentally Exposed to Significant Fallout Radiation" Project 4.1 was the designation for a medical study and experimentation conducted by the United States of those residents of the Marshall Islands exposed to radioactive fallout from the 1 March 1954 Castle Bravo nuclear test at Bikini Atoll, which had an ...
The first eon in Earth's history, the Hadean, begins with the Earth's formation and is followed by the Archean eon at 3.8 Ga. [2]: 145 The oldest rocks found on Earth date to about 4.0 Ga, and the oldest detrital zircon crystals in rocks to about 4.4 Ga, [34] [35] [36] soon after the formation of the Earth's crust and the Earth itself.
In the Korean Peninsula, the 4.2 ka event was associated with significant aridification, measured by the large decline in arboreal pollen percentage (AP). [ 75 ] The Sannai-Maruyama site in Japan declined during the same period; [ 76 ] the growing population of the Jomon culture gradually turned to decline after that.
[60] [61] [62] It is this migration wave that led to the lasting spread of modern humans throughout the world. A small group from a population in East Africa, bearing mitochondrial haplogroup L3 and numbering possibly fewer than 1,000 individuals, [ 63 ] [ 64 ] crossed the Red Sea strait at Bab-el-Mandeb , to what is now Yemen , after around ...
Al-Idrīsī defined his maps differently. He considered the extent of the known world to be 160° in longitude, and divided the region into ten parts, each 16° wide. In terms of latitude, he portioned the known world into seven 'climes', determined by the length of the longest day. In his maps, many dominant geographical features can be found ...
Human history is the record of humankind from prehistory to the present. Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers.They migrated out of Africa during the Last Ice Age and had spread across Earth's continental land except Antarctica by the end of the Ice Age 12,000 years ago.
The recorded history of Andhra Pradesh, one of the 28 states of 21st-century India, begins in the Vedic period. It is mentioned in Sanskrit epics such as the Aitareya Brahmana (800 BCE ). [ 1 ] [ 2 ] [ 3 ] Its sixth-century BCE incarnation Assaka lay between the Godavari and Krishna Rivers , [ 4 ] one of sixteen mahajanapadas (700–300 BCE).