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Rodas Rodas
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Posts: 6549
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6 years ago
It is predicted that by 2050 the world's population will have
 
  a. reached 5.5 billion.
  b. declined to 7 billion.
  c. remained stable at 6 billion.
  d. increased to 20 billion.
  e. reached 9 billion.
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OkaztleOkaztle
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6 years ago
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