Final answer:
The temperature should decrease as Jeremiah moves from an urban environment to a forest preserve due to the urban heat island effect, which causes cities to be warmer than the surrounding rural areas.
Step-by-step explanation:
According to the urban heat island effect, as Jeremiah leaves the city and heads toward the nature preserve, the temperature should decrease. The urban heat island effect refers to urban or metropolitan areas being significantly warmer than their rural surroundings due to human activities. The difference in temperature is attributed to the high concentration of buildings, roads, and other infrastructure in cities that absorb and re-emit the sun's heat more than natural landscapes. This effect is most noticeable during the evening and night.
Conversely, in forest preserves, the abundance of vegetation offers more shade and moisture, which typically results in cooler temperatures. This can lead to a noticeable drop in temperature as one travels from a dense urban area to a more natural setting.