This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: High altitudes are a stress on human populations because there is less oxygen available to breathe. ... (Read 41 times)

Davideckstein7

  • Hero Member
  • *****
  • Posts: 555
on: Jul 10, 2018
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
Reply #1 on: Jul 10, 2018
Answer to Question 1

Answer b

Answer to Question 2

Answer a


Davideckstein7

  • Hero Member
  • *****
  • Posts: 555
Reply #2 on: Jul 10, 2018
TY


ky860224

  • Sr. Member
  • ****
  • Posts: 350
Reply #3 on: Jul 10, 2018
Happy to Help


« previous next »
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

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?

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?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

human skin and pressure points human skin and pressure points
Factors affecting determination of pulse oxygen saturation Factors affecting determination of pulse oxygen saturation
The primary ignition system is used to trigger and therefore create the secondary (high-voltage) ... The primary ignition system is used to trigger and therefore create the secondary (high-voltage) ...
How the neural plate develops into the neural tube during the third and fourth weeks of human ... How the neural plate develops into the neural tube during the third and fourth weeks of human ...
Human immunodeficiency virus (HIV) micrograph Human immunodeficiency virus (HIV) micrograph
A single cell from an early-stage human embryo A single cell from an early-stage human embryo
Video: Hydrogen bonds - role in the body

For a complete list of videos, visit our video library