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

Author Question: According to the textbook, humans have always migrated, beginning about ________ years ago A) ... (Read 27 times)

Marty

  • Hero Member
  • *****
  • Posts: 553
According to the textbook, humans have always migrated, beginning about ________ years ago
 
  A) 500,000
  B) 200,000
  C) 100,000
  D) 60,000
  E) 30,000

Question 2

What is Crude Death Rate? Give an example of how to calculate the CDR.
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

AngeliqueG

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

Answer: B

Answer to Question 2

Answer: The crude death rate (CDR) of a country is the total number of deaths in a year for every 1,000 people alive in that country. The CDR is expressed as the annual number of deaths per 1,000 population. This is important for calculating the NIR. The NIR is computed by subtracting CDR from CBR, after first converting the two measures from numbers per 1,000 to percentages (numbers per 100). Therefore, if the CBR is 30/1000 and the CDR is 10/1000, then the NIR is 20 per 1,000, or 2 percent.




Marty

  • Member
  • Posts: 553
Reply 2 on: Jul 14, 2018
Wow, this really help


cpetit11

  • Member
  • Posts: 321
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

For a complete list of videos, visit our video library