Hope you guys find the previous video nice & interesting!!~ :D
Once the season of the fall starts, there'll be a change of colour in the leaves. They no longer stay green but turns into the colours in the picture above. The reason is because during the fall, there isn't enough sunlight/water for photosynthesis to take place. The green chlorophyll disappears be cause there isn't the sunlight to convert to chemical energy. Therefore, allows the bright colours that have been hidden all summer by the green colour to show through.
Just for your additional information, the red colour in the leaf occurs because there is food, carbohydrates, trapped in the leaf. The leaf that has a brown colour has waste trapped in it.
This shows what is occurring in the leaf during the process of photosynthesis. Where carbon dioxide + water + chlorophyll and sunlight -----> oxygen + sugar .

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