9. Why did ''Homo ergaster'' go extinct?

About 74,000 years ago Mount Toba, a volcano in South East Asia erupted in spectacular fashion, the biggest explosion in the last two million years. Because of its magnitude it is classed as a supervolcanic eruption. The volcano spewed enough sulphur into the atmosphere to lower world temperatures by several degrees and enough molten rock to cover an area the size of Britain to a depth of 10 metres. It also produced vast amounts of ash. Driven by the winds, clouds of white Toba ash covered huge swathes of Asia, including much of the Indian subcontinent. It can still be found today. Whether it was the effects of Toba, or the arrival of modern humans, the eruption marks the high tide of erectus' occupation of Asia. Over the next 40,000 years they were slowly driven out, probably by a combination of climate change and the effects of being out-competed for scarce food by the spread of modern humans. http://www.bbc.com/news/science-environment-13874671 RB

In Darwin's thesis he states that throughout history all animals have to move, adapt, or die. Homo ergaster was one of the closer species to homo sapiens and they were found in many parts of Africa[1]. During the lifespan of 1 million this species build the most advanced tool, the stone double face knife/ax, but during this million years they never designed a new tool resulting in the species not adapting. Because of their lack of ingenuity and adaptation they didn't live as long as they could and the species became extinct

Daniel Schaan

Video Guide: "Walking with Cavemen" page 2 question 15

Picture [2]