ROOTS 
 ARE  THE  UNDERGROUND    PART  OF   PLANTS.They  have   three   main  
functions .Firs
t,they  anchor  the  plant  in  the  soil.Second , they  
absorb   water   and   minerals   from  the  space  between   soil  
particles ;the  roots'   absorptive   properties  are  increased  by   
root  hair ,which  grows   behind  the  root  tips , allowing  maximum  
uptake  of  vital   substances .Third , the  root  is  the  part  of  
the plant's   transport   system :xylem  carries   water  and  
minerals   from  the   root    to  the  stem  and  leaves,and  phloem   
carries  nutrients   from  the  leaves  to  all parts  of  the root  
system.In  addition , some  roots (e.g carrots)are  food   stores.Roots 
 have  an  outer  epidermis   covering  a  cortex  of parenchyma(packing
 tissue )  and  a central  cylinder  of  vascular  tissue .This  
arrangement   helps  the  roots   resist  the force  of  compression  
as   they  grow  through  the  soil.
       While   surfing  the Web,  these commands  could  help  you  and  are  absolutely worth learning. By making repetitive motions faster, web  surfing becomes so easy  and    pleasant!  The following shortcuts can  be   work with desktop versions of Chrome, Firefox, and IE.                                                                                                                                               CTRL-T to launch a new browser tab page.   Tabbed  pages are very useful: they let you open multiple web pages  simultaneously without the same memory load as a full browser window.   Simply press CTRL-T to launch a new tab.  Related: use CTRL-Page Up and CTRL-Page Down to navigate between the tabs.                                                      CTRL-Enter to type 'www.' and '.com'                                                                                                     Once you ...
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