Human Population Review

What density-dependent growth limiting factors kept the human population relatively low prior to the advent of agriculture?

• Natural disasters

• Warfare

• Food scarcity

• Disease outbreaks

What biodiverse geographic area is considered the birthplace of agriculture?

• Great Barrier Reef

• Sahara Desert

• Fertile Crescent

• Amazon rainforest

A country starts off with a total population of 5,000 people. Over the course of a year, 55 babies are born and 75 people die. The immigration rate is 30, while the emigration rate is 50. What is the new population?

• 4,960

• 5,040

• 4,940

• 5,080

A country starts off with a total population of 5,000 people. Over the course of a year, 55 babies are born and 75 people die. The immigration rate is 30, while the emigration rate is 50.

What is the growth rate (%) of this population?

• -8.0%

• 0.008%

• 8.0%

• -0.8%

Match the following discoveries that were made during the industrial revolution.

• Water Treatment

• Chemicals/medications that kill bacteria.

• Germ Theory

• Filtration and addition of chlorine to water to remove microorganisms.

• Vaccines

• Injections of dead/weakened viruses that prevent disease.

• Antibiotics

• Disease are caused by microorganisms (bacteria, viruses, etc)

Which graph shows Exponential Growth?

• A

• B

• C

• D

Which graph shows Fixed (linear) Growth?

• A

• B

• C

• D

What is the equation for doubling time?

• Doubling time = 70 / % annual growth rate

• Doubling time = 60 / % annual growth rate

• Doubling time = 70 / annual growth rate

• Doubling time = % annual growth rate / 70

The current human population growth rate is 1.12% per year.  At this rate, how many years will it take for our population to double in size?

Mathematical Equivalence

ON

What factor that most affects life expectancy?

• Fertility Rate

• Death Rate

• Infant mortality Rate