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Author Question: When did the world population reach 1 billion? Six billion? What will be an ideal ... (Read 64 times)

penza

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on: Jul 21, 2018
When did the world population reach 1 billion? Six billion?
 
  What will be an ideal response?

Question 2

When were llamas first imported to the United States?
 
  What will be an ideal response?


janeli

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Reply #1 on: Jul 21, 2018
Answer to Question 1

Population was estimated to reach 1 billion in 1804 and 6 billion in 1999.

Answer to Question 2

during the late 1800s for zoos


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