I learned that when environmental factors like light or temperature change, the heart rate drastically changes. For example, when we started with room temperature their heart rate went up, but when we raised the temperature, their heart rate got even faster. Eventually, when we added ice to the cup, their heart rate went down a lot. The average was almost twice as low to when it was at room temperature. We then came up with experimenting with light, and we predicted that their heart rate would rise due to higher intensity of light. Overall, we learned that their heart rate changes a lot due to temperature and that their heart rate increases when the temperature rises.