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

Author Question: High altitudes are a stress on human populations because there is less oxygen available to breathe. ... (Read 98 times)

Davideckstein7

  • Hero Member
  • *****
  • Posts: 555
High altitudes are a stress on human populations because there is less oxygen available to breathe.
 
  a. True
  b. False

Question 2

Which of the following is a mechanism by which human populations cope with high altitudes?
 
  a. hypoxic ventilatory response (HVR)
  b. vasodilation
  c. pupil constriction
  d. vasoconstriction



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ky860224

  • Sr. Member
  • ****
  • Posts: 350
Answer to Question 1

Answer b

Answer to Question 2

Answer a





 

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

For a complete list of videos, visit our video library