Human Population Growth Ecology

The largest number of individuals in a species that an environment can support long term

• carrying capacity

• emigration

• immigration

• population density

When a population grows past the ecosystem's carrying capacity, what happens to the population?

• Continues to grow

• The population starts to die off to return to carrying capcity

• The population will go extinct due to lack of resources

• The population grows then finds a new carrying capacity

Which has NOT been a major cause of the population explosion?

• modern preventive medicine

• increase in life expectancy

• improved sanitation

• increase in recycling and reusing prodcuts

Which of the following is likely to be affected by a growing human population?

• amount of land for agriculture

• amount of clean water

• amount of air pollution

• all of the above

All of the following are demographic figures used in determining the total population of a country EXCEPT...

• immigration.

• birth rate.

• death rate.

• marriage rate.

According to the age structure of this country, its population is most likely...

• growing slowly.

• growing rapidly.

• decreasing.

• not changing.

The average number of people living in a square kilometer is called...

• urbanization.

• internal migration.

• population density.

• pull factors.

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

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

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

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

What is the approximate population of our world?

• 6.7 million
• 4.3 billion
• 7.2 billion
• 7 trillion