A Changing Human Population

A Changing Human Population

A Changing Human Population
Studying Human Populations / Demography –______(usually human populations)
Countries are divided into 2 categories by demographers:
•Developed – ______
•Developing – ______
Forecasting Population Size / Demographers try to predict what will happen to a population in order ______
Demographers look at several different factors to make their predictions
Age Structure / Age structure describes the ______
Countries with ______have more ______
Countries with ______have ______

Survivorship / Survivorship - ______
______
______
______
To predict survivorship, demographers
study a group of people born at the same
time and notes when each member of the
group dies.
Fertility Rates / ______
Replacement level – ______

Declining Death Rates / Increased access to food, clean water, and safe sewage disposal have lead to a ______
This decrease has ______in the human population than the birth rate.
Migration / Migration in general______
The populations of many developed countries might be decreasing ______

Declining Death Rates /
  • The dramatic increase in Earth’s human population in the last 200 years has happened because ______.
  • Death rates have declined mainly because more people now have access to ______.
  • The ______in the 20th century also contributed to the declining death rates.

Life Expectancy / ______
______
______
______
Infant mortality rates have the
______on life
expectancy numbers
______
______in developed and developing nations.
Demographic Transition /
  • The demographic transitionis the ______.
  • ______causes ______that then affects population growth rates.

Women and Fertility /
  • A decline in birth rates can most clearly be related to ______for women.
  • Educated women ______and find that they ______to ensure that some will survive.
  • Women are able to ______for their families while spending ______