Analyzing/Interpreting Data & Graphs


Picture provided by http://www.vaccinetruth.org/polio_chart.htm
Picture provided by http://www.vaccinetruth.org/polio_chart.htm

In the 1950s what happened to the disease in the Unites States?

What effect did the vaccine have on the percent of deaths in the US and Great Britain?


Click here to see the effects on Predator and Prey Populations.

What effects did the population of predators have on the prey?
For more practice answer the questions provided under the graph.