2023微博之夜你最期待见到谁 https://t.cn/A6lDysNg
白鹿 我的点评：[苹果][苹果][苹果][苹果]
#微博之夜##超会评安利大赏#

你闪烁一下 我的世界火花飞舞
ʸᵒᵘ ᵗʷⁱⁿᵏᴵᵉ ⁱⁿ ᵐʸ ʷᵒʳᴵᵈ，ˢᵖᵃʳᵏˢ ᶠᴵʸ.我对你的热爱不会在漫长岁月中慢慢变淡
My love for you will not fade slowly in the long years.@白鹿my

It's getting colder, the sun's rays have a peculiarly yellow tint and the leaves are changing color. The golden season of autumn has arrived. Slowl but surely, the trees are losing their leaves.

Most trees native to northern Europe lose their leaves to protect against drying out. At first ,that sounds a bit strange, but when the ground is frozen, the tree is unable to soak up any water. If the tree were to keep its leaves, then the water it conserves would evaporate and the result would that the tree would dry out. That's why the shed all their leaves in autumn.

But the falling leaves are no longer green. They are red and orange.

For a tree, shedding its leaves is a very active process. As you can see, the tree slowl removes the chlorophyll from the leaf, causing it to gradually lost its green coloration, as has happened here in this yellow part.The sugar produced by the photosnthesis is stored in the trunk and acts as a sort of anti-freeze. It ensures that the cells don't crack so quickly and allows the tree to survive the winter.

The leaves change color and drop off. But how does the tree know when it's autumn?

A deciduous tree knows autumn is coming when the temperatures start to drop and the das grow shorter. The tree is able to carr out less photosynthesis, its metabolism rate slows and the tree begins to prepare itself for a sort of winter hibernation. During winter, the tree effectively shuts down. The tree leaves contain light-sensitive pigments. They act like little switches. THis is what happens when they stop receiving light. The have developed a pretty neat way of making sure that leaves can easily drop from the tree during autumn. The tree builds a cork layer between the branch and the leaf stem. This has two advantages. First, it acts as a barrier against infections. Second, it allows the leaves to fall easily from the tree in a gentle breeze.

So the changing colors make for more than just a pretty picture. The are an mportant survival technique, enabling the tree to see out the winter.

(from: Britannica )

#苏新皓[超话]##苏新皓 三代唯一全能ace# [爱你][爱你][爱你]#苏新皓 实力断层top# [打call][打call][打call]#苏新皓 三代淡颜天花板# [春游家族][春游家族][春游家族]
少年总在他该绽放的年纪绽放他最好的一面，
少年永远都是少年，少年如清风徐来！
Teenagers are always teenagers, they come slowly like the breeze！