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They're very good at conserving moisture but they nonetheless need a regular supply of water. They get it partly from cactus flowers but that explanation raises another question. How do the cacti survive without rain? Hot winds suck all the moisture from the surface of the land.





Deserts part 2 pictures


 
 

 
 

 
Planet Earth Deserts
Planet Earth Deserts
  2
part 2
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part 3
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part 4