greedysandwhich2763 greedysandwhich2763

02-05-2018
Social Studies

contestada

In what year did the human population reach 1 billion people

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hamcginnisp7tllz hamcginnisp7tllz

03-05-2018

The year was 1804. :)

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aiyanaaaaaa aiyanaaaaaa

15-11-2018

1 billion seconds is 31.709589 years or about 11,574 days

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