40. Why was the broad-spectrum revolution a significant event in human evolution? D.
It provided new environmental circumstances that made important sociocultural adaptations like the development of plant cultivation more likely
.
How did modern humans take advantage of global climate change to expand their range?
39. How did modern humans take advantage of global climate change to expand their range? …
During major glacials, with so much water frozen in ice, land bridges formed
, aiding human colonization of new areas such as Australia by 46,000 B.P. and the Americas perhaps by 18,000 B.P. 40.
Which of the following was a key obstacle that hominins increase in brain size has to overcome?
Which of the following was a key obstacle that hominins’ increase in brain size had to overcome?
the fossil suggests that the child died because her brain
, which appears to have been larger than an average chimp brain at that age, was too large for her slowly developing skull.
What group of human ancestors was found to have a pronounced brow ridge stocky build and massive nasal cavities characteristics that were adaptations to cold weather?
sapiens group
has a pronounced brow ridge, stocky build, and massive nasal cavities, characteristics that were adaptations to cold weather? push the hominin range beyond Africa, into Asia and Europe.
What does the advent of behavioral modernity refer?
To what does the advent of behavioral modernity refer?
A period when early anatomically modern humans became fully human in symbolic thought and elaboration in cultural creativity
. [Behavioral modernity represents fully human behavior based on symbolic thought and cultural creativity.
What makes humans unique from other animals?
Humans are
unusual animals by any stretch of the imagination
. Our special abilities, from big brains to opposable thumbs, have allowed us change our world dramatically and even leave the planet. There are also odd things about us that are, well, just special in relation to the rest of the animal kingdom.
Why are humans so adaptable?
The human body readily responds
to changing environmental stresses
in a variety of biological and cultural ways. We can acclimatize to a wide range of temperature and humidity. … This ability to rapidly adapt to varying environmental conditions has made it possible for us to survive in most regions of the world.
What is the brain size of a Neanderthal?
Excluding extreme conditions like microcephaly, people span from 900 to 2,100 cm3. That means the average Neanderthal brain volume, of
roughly 1410 cm3
, is higher than the mean value for humans today.
When did human brain size increase?
The bottom graph shows how brain size increased over the past 3 million years—especially
between 800,000 and 200,000 years ago
. A large brain capable of processing new information was a big advantage during times of dramatic climate change.
What is the cranial capacity of man?
Modern humans and Neanderthals show an average cranial capacity of
around 1400–1500 cc
, a figure which is probably a bit larger for the latter group. Modern humans reached their maximum endocranial volume soon after their phylogenetic origin, approximately 100–150 thousand years ago (ka).
What is the name of the stone tool tradition associated with Neanderthals?
Mousterian industry, tool culture traditionally associated with Neanderthal man in Europe, western Asia, and northern Africa during the early Fourth
(Würm)
Glacial Period (c. 40,000 bc).
What species has a pronounced brow ridge stocky build and massive nasal cavities?
Sapiens group
has a pronounced brow ridge, stocky build, and massive nasal cavities – characteristics that resulted as adaptations to cold weather? Which of the following statements about ethnicity is true? You just studied 133 terms!
What is so significant about the recent fossil finds of an H erectus?
erectus out of Africa, H. … The recent Dmanisi fossil finds suggest
a rapid spread, by 1.77 m.y.a., of early Homo out of Africa into Eurasia
. TRUE. Recently, a team uncovered a 1.2-million-year-old jawbone fragment from a species known as Homo antecessor in the Sierra de Atapuerca of Spain.
What is the symbolic revolution?
By 50,000 years ago, the effects of a ‘symbolic explosion’ — an efflorescence
of human art
, song, dance and ritual — were rippling across the globe. Applied to archaeological evidence, standard neo-Darwinian theory offers new understandings of this improbable event.
What is meant by modernity?
Modernity, the self-definition of
a generation about its own technological innovation, governance, and socioeconomics
. To participate in modernity was to conceive of one’s society as engaging in organizational and knowledge advances that make one’s immediate predecessors appear antiquated or, at least, surpassed.
Are humans gracile?
The postcranial skeleton of modern Homo sapiens is
relatively gracile
compared with other hominoids and earlier hominins. This gracility predisposes contemporary humans to osteoporosis and increased fracture risk.
