Human Populations

If a population grows larger than its environmental carrying capacity, then

• death rate may rise.

• death rate may fall significantly.

• birth rate may rise significantly.

• immigration rate may increase.

Countries with high growth rates usually have an age structure that has

• an even distribution over all ages
• more older people than young people
• more younger people than older people.
• more middle-aged people than younger people.

In the demographic transition, which factor decreases first?

• birth rates
• death rates
• growth rates
• total population

What type of growth is the human population experiencing today?

• Exponential growth

• Zero population growth

• Slight decreases in growth

• Slight increases in growth

The study of population is

• survivorship

• demography

• age structure

• migration

The distribution of ages in a specific population

• age structure

• infrastructure

• life expectancy

• demographic transition

Percentage of members of a group who are likely to survive to a given age.

• survivorship

• life expectancy

• age structure

• migration

Movement of individuals into or out of a population.

• demographic transition

• infrastructure

• urbanization

• migration

A density-dependent limiting factor only becomes limiting if:

• A population begins to decrease in size.

• Random events occur in nature.

• There are predator-prey interactions.

• A population reaches its carrying capacity.

Which of the following is NOT an example of a Density Dependent Factor?

• Parasitism

• Natural Disasters

• Predation

• Competition