Background Paragraph: In nature, when the population size is small, there is usually plenty of food and other resources for each individual. When there is plenty of food and other resources, organisms can easily reproduce, so the birth rate is high. As the population increases, the food supply, or the supply of another necessary resource, may decrease. When necessary resources, such as food, decrease, some individuals will die. Overall, the population cannot reproduce at the same rate, so the birth rates drop. This will cause the population growth rate to decrease. 
Story: Two neighboring countries of similar size and wealth of resources had different sized population. Deerland had a small population, while Bearland had a large population. Both peoples lived mostly off the land.
Which country had a higher birth rate? Which country had a lower birth rate? Which country had fewer resources per individual? Which country had less food per individual? Which country had more food per individual? Which country had plenty of resources per individual? Which country will experience fewer deaths? Which country will experience more deaths? Which country will experience population decrease in the future? Which country will experience population increase in the future?