Conifer trees have needle-like leaves primarily to reduce water loss and withstand harsh environmental conditions. Their needles are adapted to conserve moisture, which is crucial in environments where water availability may be limited. This adaptation helps the tree survive in various climates, particularly in colder regions where they can also take advantage of photosynthesis year-round. Additionally, the shape minimizes snow accumulation, reducing the risk of branch breakage. The resin produced by conifers also serves as a defense mechanism against pests and disease, enhancing their resilience in challenging habitats.