Why do evergreen trees stay green year round?

Evergreen trees stay green year-round because they have needle-like leaves that are adapted to withstand harsh weather conditions. These leaves contain a waxy coating that reduces water loss and are able to photosynthesize efficiently even in low light. Unlike deciduous trees, which shed their leaves annually to conserve resources during winter, evergreens retain their foliage and continue to perform photosynthesis throughout the year. This adaptation allows them to thrive in various climates and environments.