Question

Восени листя жовтие тому що...

Answer 1

Привіт .Листя жовті ,тому що наступає інша пора року и листячко опадае і дерева на зиму остаються голі

Answer 2

Why do leaves turn yellow in the fall?

Leaves turning yellow in the fall is a natural process that occurs as trees prepare for winter. The change in color is primarily due to the decrease in chlorophyll production, which is responsible for the green color of leaves during the growing season. As the days become shorter and temperatures drop, trees start to shut down their food production process and prepare for dormancy. During this time, the chlorophyll in the leaves breaks down, revealing other pigments such as carotenoids (which produce yellow, orange, and brown colors) and anthocyanins (which produce red and purple colors).

The role of chlorophyll in leaf color

Chlorophyll is the pigment that enables plants to absorb sunlight and convert it into energy through photosynthesis. It is also responsible for the green color of leaves. During the growing season, chlorophyll is continuously produced and masks the other pigments present in the leaves. However, as the days become shorter and temperatures drop in the fall, chlorophyll production slows down and eventually stops. As a result, the green color fades, and the other pigments become more visible, leading to the yellow, orange, and red colors observed in autumn leaves.

Environmental factors affecting leaf color

Several environmental factors can influence the intensity and timing of fall leaf color. These factors include temperature, sunlight, and moisture. Cool temperatures and sunny days promote the production of anthocyanins, which contribute to the vibrant red and purple colors seen in some leaves. On the other hand, warm temperatures and cloudy days can delay the onset of fall colors and result in less intense hues. Additionally, drought conditions can cause leaves to turn brown and fall prematurely.

Conclusion

In summary, leaves turn yellow in the fall due to the decrease in chlorophyll production and the subsequent reveal of other pigments such as carotenoids. Environmental factors such as temperature, sunlight, and moisture also play a role in the intensity and timing of fall leaf color. It is a natural and beautiful process that marks the transition from the growth phase of trees to their dormant phase during winter