This topic contains a solution. Click here to go to the answer

Author Question: Bipedalism, considered a key defining characteristic that differentiated early hominins from other ... (Read 162 times)

skymedlock

  • Hero Member
  • *****
  • Posts: 561
Bipedalism, considered a key defining characteristic that differentiated early hominins from other apes,
 
  A. may have evolved as a result of anatomical changes caused by stone tool manufacturing.
  B. evolved as a result of anatomical changes caused by an increase in brain size.
  C. perhaps developed in the woodlands but became even more adaptive in a savanna habitat.
  D. resulted in greater exposure to heat stress because on two feet, hominins spent increasingly more time in the open grasslands.
  E. was accompanied by a sharp increase in hominins' climbing abilities.

Question 2

Which of the following was a key obstacle that hominins' increase in brain size had to overcome?
 
  A. larger skulls demanding more elastic birth canals, even though the requirements of skeletal development during a woman's lifetime limit the elasticity of birth canals
  B. the challenges of walking with a head that is too heavy
  C. overcoming the trend of clumsy locomotion that makes hominins vulnerable to predators
  D. overcoming the trend of ever more self-sufficient children eager to separate themselves from their mothers
  E. larger skulls demanding larger birth canals, even though the requirements of upright bipedalism impose limits on the expansion of the human pelvic opening



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cclemon1

  • Sr. Member
  • ****
  • Posts: 312
Answer to Question 1

Answer: C

Answer to Question 2

Answer: E




skymedlock

  • Member
  • Posts: 561
Reply 2 on: Aug 11, 2018
Thanks for the timely response, appreciate it


aliotak

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

For a complete list of videos, visit our video library