When an environment has reached its carrying capacity for a certain population, which of the following is true? 

•  Growth and immigration rate is equal to death and emigration rate. 
•  Growth and immigration rate is greater than death and emigration rate. 
• Growth and immigration rate is less than death and emigration rate. 
• Growth rate is exponential. 

 On remote islands, immigration and emigration usually do not have a large effect on population sizes. A bird population on a remote island remains at a relatively constant size year after year. Which of the following most likely describes the birthrate and the death rate for this population? 

•  Birthrate and death rate are both zero 
•  Birthrate and death rate are close to equal. 
• Birthrate is significantly less than death rate. 
• Birthrate is significantly greater than death rate. 

The number of deaths compared to the total number of people in a population

• death rate
• doubling time
• population decline
• birth rate

The number of births compared to the total number of people in a population

• death rate
• birth rate
• baby boom
• doubling time

Which is NOT a reason for the decreasing death rate?

• Better health care
• Greater food supply
• Cleaner water
• More pollution

The average number of people per square mile

• population distribution
• population density
• urbanization
• population rate

Densely populated areas such as cities

• Urban areas
• Rural areas
• Countryside
• Suburbs

The movement of people from place to place

• Migration
• Urbanization
• Modernization
• Industrialization

Leaving one's home to live in a new place

• Emigration
• Immigration
• Urbanization
• Ruralization

To enter and live in a new country

• Emigration
• Immigration
• Urbanization
• Industrialization