This document describes a study that investigated differences in leaf adaptations between the east and west sides of a holly tree. Specifically, it compared the number of prickles per leaf between branches from each side. The study found the average number of prickles was significantly higher on leaves from the east side compared to the west side. This difference is likely an adaptation to maximize sunlight absorption, as leaves on the east side receive more sunlight during the day. However, the study had limitations such as a small sample size and not accounting for other environmental factors. Further research is needed to better understand the causes of these adaptive leaf traits.