Why don't ever greens change colour?

Answer 1

Evergreens retain their green color year-round because they have needle-like leaves that are adapted to withstand harsh weather conditions. These leaves contain chlorophyll, which allows them to photosynthesize even in cold or dry conditions. Unlike deciduous trees, which shed their leaves to conserve water and energy, evergreens maintain their foliage and continue to produce energy throughout the year. This adaptation helps them thrive in diverse climates, including those with long winters.