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They find new feeding grounds by following the smell of sprouting grass. Normally it takes four weeks for hoppers to become adults, but when the conditions are right as now their development switches to the fast track. As the vegetation in one place begins to run out the winged adults release pheromones - scent messages, which tell others in the group that they must move on.





Deserts part 4 pictures


 
 

 
 

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