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DESERT-PLANTS AND ANIMALS

THERE   ARE   MANY  KINDS  OF  DESERTS  IN  THE  WORLD-Such  as  snow  deserts,  water  deserts   and  sandy   or  dry  deserts.In   Sandy  or  dry   desert    there  are  vast  tracts  of  sand   with   very  high  temperature    and  difference  between    day  and  night  temperature..There   are  sand storms   that  blows  hard   and make  life    dangerous.Sand dunes  are  ever changing their  shapes  and places   by  the  work  of  winds.
Animals  and   plants  adapt   themselves  to  be  able  to  survive  in  this  harsh   environment.Some animals like  antelopes  have  developed   tricks  so  that  they    are  able  to  withstand   thirst.
PLANTS  CACTUSCACTI    OR  CACTUS  have  an  outer  waxy  layer    and   their  leaves   have   evolved    into  thorns   to  prevent  evaporation   of  water.In  the  morning  their  thorns   and  outer  waxy  layer   able  to   absorb  dew  drops .They   store  water  water  in  their   bodies  and  roots    and  use  it  slowly.
The  saguaro   cactus  in  the  Mexico  desert,fills  it  self  up  completely  when  it  rains  heavily   and  expand  like  an  accordion. 
BLOOMING   FLOWERS  IN  DESERT.-When  it  rains after  years  in  the desert ,the  seeds lying  dormant  in  the  ground  germinate  immediately  and  blooms   and  desert  become  bed of flowers.But   it  is  short  lived ,after   few  days  the  plants  withers  again.Before  withering   they  create  new  seeds.Which  waits  for  next  times  it  rain.
DESERT   ANTELOPE    -White  Oryx    found  in  the  Arabian  desert  have  adapted  themselves   to  a  life  in  desert.They  do  not  drink  water ,  but  eat   when  it  is  cooler  and  when  the  plants  are  wet  with  dew  drops.They  pass  very  little  moisture
out  of  their  bodies  because  their  bodies   have  a system  of   cooling   the  blood  before  it  reaches  the  brain .Their  fur  is  paler  on underside  to  reflect  ground  heat   away  from  their  stomach .
OASES  IN   DESERT-OASES   are  fertile  places  in  the  desert  ,where  water  is  stored  under surface .Here  sand  is  porous  ,so  when it  rains  most  of  the    water  runs  right   through  the  sand  and  goes     down   to  the  bed  rock ,several  hundred  feet   below  the  surface .Earlier   oases  were   important  trading   places  for  passing  caravans .The  conventional  oasis  economy 
cereals,pomegranates,and  figs  and  dates.Oases   are  life lines  of  deserts.
SAND STORMS  - HOT  WINDS  that  whirls  up  and  carry  the  desert  sand  are  sand storms.They   can  rage  for  days  and  so   much  dust  that  nothing  is  visible It  is  like   a  solid  wall  of  sand   that  could  be as high  as  1.6  km.Animals  and   people   caught  in  it  can  lose  their   life.Nomads  in  desert   protect  themselves  with   the  help  of   veils   over  their  heads    and  faces.Camels  protect  themselves   by  closing  their  nostrils 
and  by   their  extra large   eyelashes  ,that  cover  their  eyes.
WHITE  ORYX


      


        


        


    
OOASIS
              


                


     DESERTS
                  


                      


                        



                          


                              


                      

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