2 A. The Human Population Over Time 1. Demography is the study of populations.
3 A. The Human Population Over Time 2. Industrial and scientific revolutions caused a period of exponential growth.
4 A. The Human Population Over Time 3. Scientists believe we can not indefinitely sustain the current population at today's standards of living.
5 B. Forecasting Population Size 1. Demographers make predictions based on age structure (distribution of ages in a specific population at a certain time).
6 B. Forecasting Population Size 2. Survivorship is the percentage of members of a group that are likely to survive to a given age.
7 B. Forecasting Population Size 3. Survivorship curves show 3 possible outcomes:Type I: Population where most individuals live to an advanced age.Type II: Population where all ages have a similar death rate.Type III: Population where many offspring die.