The best estimates are that humans populated the Americas about:
a. 25,000 years ago.
b. 40,000 years ago.
c. 10,000 to 12,000 years ago.
d. 15,000 to 18,000 years ago.
e. 5,000 to 6,000 years ago.
ANSWER: d
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Which of the following is true of Olduvai Gorge?
A. It is a rich deposit of early hominin bones and stone tools. B. It is located in Ghana in West Africa. C. It is more than 5 m.y.a. D. It is home to a trove of garnet and onyx jewelry.
Once in existence, Acheulean tools
A) showed continuous progress in complexity and variety B) led to highly specialized versions of the hand axe C) went out of style within 100,000 years and were replaced by blade tool technology D) replaced the Oldowan tools all across the Old World E) did not change or changed very little for the next 1.5 million years
Human bodies evolved and adapted in __________, thus an overabundance of some modern resources, such as __________, can result in disease
a. hunter-gatherer environments; fatty foods b. cities; pollution c. tropical forests; antibiotics d. open environments; vaccines
STARworks in South Carolina has made great strides in developing new bioenergy fuels for cars and also heating houses
a. True b. False Indicate whether the statement is true or false