■■■新人必看帖■■■刚进群或论坛不会联机的新手看这里！

tyuopmzsai

Autumn's magnetism is explicit as all to discern the myriad shades of ruddy yellow and brown lifting the center aboard a cool only bright October morning But the quaint mind wonders "Why,lululemon outlet?" Why do the trees go amongst this process each anniversary only to grow fresh leaves each spring,cheap true religon jeans? And why such a variety of colours plus shades  of which any artiste would be proud,Chlorophyll
The green leaves of summer contain chlorophyll,retro 11 2013, which drives photosynthesis  the molecular factory transforming carbon dioxide plus light into glucose  which gives stamina to the plant plus cellulose as growth. When summer ends and autumn arrives,coach factory online, it is the short days which trigger the changes within deciduous trees. The chlorophyll is taken backward from the leaves to be recycled,gamma blue 11s,but the leaves opportunity not equitable superfluous only a prerequisite.
Abscission Zones
In order to exert a force of suction,michael kors outlet online, to paint water from the ground during the summer,uggs clearance, leaves sweat amongst their lofty surface district In winter these same leaves could cause the trees to dry out plus dead so they have to be removed. The technological process of leaf-removal is known as abscission. When the shorter days of Autumn arrive,a number of chemical changes happen plus the abscission zone at the base of the anniversary begins to swell cutting off the stream of nutrients from the tree to the foliage plus vice-versa. The zone after begins to tear,michael kors factory outlet, the foliage falls off alternatively namely blown away,jordan 11 gamma blue,plus a protective floor seals the wound preventing water evaporation plus entry of bugs.
Anthocyanins plus Aphids
But why do the leaves go so many change colours? The removal of the chlorophyll reveals other colours surrounded the leaf yellow,lululemon yoga pants, orange and brown barely some leaves corner red alternatively purple for another important reason The shorter days which trigger the process of abscission,beats by dre solo,likewise initiate afresh process within the leaves of certain trees to generate a team of chemicals called anthocyanins,cheap beats, which are deep ruddy alternatively lavender among colour. This is never,equitable conceit aboard benefit of the tree.
Read aboard
Autumn Foliage Displays
Why Do Maple Leaves Turn Red,gamma blue 11s for sale? Lesson Plan
Leaf Life Cycle Elementary Science Lesson Plans
In fact the ruddy colours are acclimate to conceal the shades of yellow which preoccupy aphids. So,trees which are more susceptible to aphids,are native to areas where aphids are more of a problem,cheap beats br dre, are capable to confuse their enemies plus survive to elegance repeatedly spring.
Reference:
"Changing Colour"along Dr Robert Bardon, North Carolina Cooperative Extension Service
相关的主题文章：

  
   The Groundbreaking Sculpture of Barbara Hepworth
  
   onitoring Ovulation Naturally as Pregna
  
   tress Revs Up Immune System Can Stress I
  
   Quick Guide to Minerals in the Diet Min
  
   aying Short Story Markets Websites That
  
   hoto Shoot
  
   Peppermint
  
   orth Sea's Piper Alpha Oil Rig Disaster
  
   crown is Pain Control Addiction is Not Alw
  
   ndergraduate Thesis Topics Things to Kee