Author Question: Which best describes rates of population growth until a few hundred years ago? a. cycles of ... (Read 49 times)

Capo

  • Hero Member
  • *****
  • Posts: 545
Which best describes rates of population growth until a few hundred years ago?
 
  a. cycles of growth and then decline under Malthusian pressures
  b. constant growth
  c. very fast growth
  d. none of the above

Question 2

About how many hunter-gatherers at any give time were living on Earth during the first 120,000 years of human existence?
 
  a. about 3-5 million
  b. about 100 million
  c. about 200 million
  d. about 300 million
  e. about 400 million



Ahernandez18

  • Sr. Member
  • ****
  • Posts: 361
Answer to Question 1

a. cycles of growth and then decline under Malthusian pressures

Answer to Question 2

a. about 3-5 million



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

For a complete list of videos, visit our video library