National Geographic Travelさんのインスタグラム写真 - (National Geographic TravelInstagram)「Photo by @daisygilardini | Fall is a time of change. Shorter daylight hours and colder temperatures cause photosynthesis to slow down and eventually stop. When chlorophyll, which makes leaves appear green, breaks down, other pigments take over: carotene (responsible for yellow) and anthocyanin (red). The yellows and reds shine through, giving us one of nature's most beautiful shows. Follow me @DaisyGilardini for more images and stories behind the scenes. #Canada #BanffNationalPark #fallcolor」11月13日 6時10分