Ch. 5 Quiz Study Guide

Which of these is not studied in demography?

climate

what are density-dependent factors

density-dependent factors are factors whose effects on the size or growth of the population vary with the population density

what are density-independent factors

density-independent factors are any limiting sizes of a population whose effect is not dependent on the number of individuals in the population

What term describes individuals moving away from a population?

emigration

How many people live on planet Earth?

7.6 billion

What is the world's most populated country?

China

Which of these is not a characteristic of a population?

Climate

What environmental factors are not dependent on numbers of organisms per unit of area?

Density-Independent factors

What kind of human population growth is shown between 1000 A.D. and the present?

Exponential

Human life expectancy is_____

Increasing

Why don't mice in the wild reproduce at the rate shown in this graph?

Limiting factors are present

Can population growth of any species continue indefinitely?

No

Explain the policy and its purpose that resulted in a population pyramid like this for China in 2009. Be sure to cite evidence directly from the pyramid

One Child Policy - to reduce future population growth, China mandated that couples were only allowed to have one child

Why is disease considered a density-dependent environmental factor?

Population density affects amount of contact between individuals in a population

What can be concluded about the relationship between wolves and moose, based on this graph?

Wolves prey on moose

The number of organisms per unit of area is called ____

population density

What occurs when the birthrate equals the death rate?

zero population growth